ProfitPress Mega CDROM2 …eeware (MSDOS)(1992)(Eng)/ProfitPress-MegaCDROM2.B6I/MISC/OS2/PMCOMM.ZIP/PMCOMM.HLP

OS/2 Help File | 1990-12-06 | 76.7 KB | 3,493 lines

ΓòÉΓòÉΓòÉ 1. Extended Help ΓòÉΓòÉΓòÉ

There is a collection of utilities in the File section such as; Scripts,
Capture, Print, Copy, and  Paste. There is also an About box that has
information on  Multi-Net Communications, the company that wrote this software.

In the Edit section there are commands such as Copy, Paste, and Clear_Screen.
These commands will help you manipulate on-screen information.

The Connect command allows you to connect to another computer, either through a
modem, using the Dial command or direct connect, using the Send_Break command.

Transfer allows the use of different protocols to send and receive files to or
from a remote computer. The protocol options are Xmodem_Checksum, Xmodem_CRC,
1K-Xmodem, Ymodem(batch), Ymodem-g(batch), Zmodem, CISB, and ASCII. Zmodem is
probably the best selection when available on the remote computer. Ymodem-G
should only be used with error correcting modems.

Hang-up sends the hang-up command string (see the Option menu) and optionally
drops the dtr line to the modem. Dropping dtr is the most effective if your
modem is setup to hang-up when dtr is dropped. Using a hang-up string is also
slower, because Pmcomm has to get the modem into the command state before
sending the hang-up string. If you have dtr on and delete the hangup string the
hang-up will be much faster.

Option allows you to tailor Pmcomm to your own tastes. The areas in option are
Port, Dial_Setup, Modem, Protocols, Paths, Macros_Setup, Screen, Terminal, and
Color. The setup is not automatically saved. This allows you to change things
temporally without changing your default setup file. If you do want to make the
changes permanent be sure to save the setup file. To save the current setup
file,  use the Save_setup command under the File menu option.

Macros allows you to pick, with a mouse, the macro you wish to send. Macros can
also be selected with an Alt+corresponding number keystroke. Pmcomm allows you
to set up ten different macros.


ΓòÉΓòÉΓòÉ 1.1. Keys Help ΓòÉΓòÉΓòÉ

The following is a list of "Hot keys" available.

  F1      =   Help.

  F3      =   Exit.

  Alt-D     =   Dialing directory.

  Alt-H     =   Hangup.

  Alt-X     =   Exit.

  Ctrl-Break  =   Send break.

  Ctrl-Insert  =   Copy.

  Shift-Insert  =  Paste.

  Page-Dn   =   Download.

  Page-Up   =   Upload.

  Print Scrn  =   Prints text in the visible
           window (full line length).

 The up and down arrow keys default to scrolling the window. You can change
 this in the setup terminal dialog box so that when in ANSI mode the arrow keys
 will be sent to the modem.

 In VT100 mode, some keys have been changed to try to closely emulate the VT100
 keyboard. F1-F4 are now the PF keys. Because of this the F1 key will not
 display the normal help, and F3 will not exit the program. The PF keys will
 send the following characters:

   F1 = ESCOP

   F2 = ESCOQ

   F3 = ESCOR

   F4 = ESCOS

 Where ESC is equal to the ASCII character hex 1B. All other hot keys will not
 be available. When the num lock key is off the numerical key pad will be in
 the application mode. If you are connecting to a VT220 Host you can use these
 keys to send the VT220 PF key values. For example pressing the 1 on the
 numeric key pad will send the VT220 PF1 key. Pressing the 3 on the numeric key
 pad will send the VT220 PF3 key, and so on.With the num lock on the numbers
 will be sent. The plus key has been re-mapped to be a comma, again to be
 compatible with the VT100 keyboard.


ΓòÉΓòÉΓòÉ 2. File ΓòÉΓòÉΓòÉ

There is a collection of utilities in this section such as; Save_setup,
Scripts, Capture, Print, Copy, and  Paste. There is also an About box that has
information on  Multi-Net Communications, the company that wrote this software.


ΓòÉΓòÉΓòÉ 2.1. Save Setup ΓòÉΓòÉΓòÉ

Saves user definable configurations, as well as screen size and position.


ΓòÉΓòÉΓòÉ 2.2. Capture ΓòÉΓòÉΓòÉ

Capture saves everything that is received from the modem to a file. For
example, you can capture all new messages and then read them after  you hang
up. If you specify PRN as the filename everything will be captured to the
printer.


ΓòÉΓòÉΓòÉ 2.2.1. Start Capture ΓòÉΓòÉΓòÉ

You will be prompted for a file name and then everything that comes in from the
modem will be saved to that file. If PRN is selected then everything will be
sent to the printer.


ΓòÉΓòÉΓòÉ 2.2.2. Cancel Capture ΓòÉΓòÉΓòÉ

This command will turn off capture. This command will only work if capture was
started with the Start_Capture command.


ΓòÉΓòÉΓòÉ 2.3. Scripts ΓòÉΓòÉΓòÉ

Scripts allow you to have the computer perform certain tasks automatically. The
internal commands available are;

 wait_for
 puts
 sleep
 call
 capture_on
 capture_off
 shell

 The REXX commands that are available are;

 init_dll
 setcom
 sendb
 dcd
 char_avail
 read_timeout
 Get_ch
 ring_detect
 drop_dtr
 raise_dtr
 Wait_for
 Wait_fore
 Put_s
 Sleep
 beep
 xmodem_send
 xmodem_receive
 xmodem_1k_send
 xmodem_1k_receive
 ymodem_send
 ymodem_receive
 ymodemg_send
 ymodemg_receive
 zmodem_send
 zmodem_receive
 ascii_send
 ascii_receive
 set_download_path
 os2_shell

 The scripts command is only available in the registered version of Pmcomm.


ΓòÉΓòÉΓòÉ 2.3.1. Start Scripts ΓòÉΓòÉΓòÉ

 With this command you can start a pre-written script at any time. Just enter
the file name of the script. This script must be in the same directory as the
program.


ΓòÉΓòÉΓòÉ 2.3.2. Script Dialog ΓòÉΓòÉΓòÉ

The Script Dialog displays information and options about the current script.
When the dialog is displayed you have the option of either Aborting the script,
closing the dialog box, or skipping the currently executing command.


ΓòÉΓòÉΓòÉ 2.3.3. Cancel Script ΓòÉΓòÉΓòÉ

This command is used to stop a script that is already running. The script will
be canceled at the time this is selected unless the script is at a sleep
command. In this case the script will stop after the sleep time interval has
expired.


ΓòÉΓòÉΓòÉ 2.4. Log File  ΓòÉΓòÉΓòÉ

Logging writes to a file named pmcomm.log in the main pmcomm directory. The
type of information written is the time, date and name of the number  called.
The time, date, cps and name of files transferred will also be saved. If you
are setup  to monitor DCD the time and date of when the call was terminated
will also be recorded.


ΓòÉΓòÉΓòÉ 2.4.1. Start Logging ΓòÉΓòÉΓòÉ

The file named pmcomm.log in the main pmcomm directory will be opened. Any
logging information will be appended to the end of the file.


ΓòÉΓòÉΓòÉ 2.4.2. Cancel Logging ΓòÉΓòÉΓòÉ

The log file will be closed and no other information will be written to the log
file, until it is re-opened using the Start Log option.


ΓòÉΓòÉΓòÉ 2.5. File Import ΓòÉΓòÉΓòÉ

This command copies a file from disk and sends it to a remotely connected
computer. This can be handy for sending previously saved files as messages, or
during a chat session. At times this is handier then using the clipboard. The
delay time specified in the file import delay parameter under
Options,Protocols, will pause the specified number of seconds after each line
has been sent. This can be useful if the receiver can not process the
information as fast as Pmcomm can send it.


ΓòÉΓòÉΓòÉ 2.6. Print ΓòÉΓòÉΓòÉ

Print allows you to send information that was previously received out to the
printer. You can either send the information that is displayed on the visible
part of the window, or you can print the whole scroll back buffer. The print
function uses PRN as the device name for printing.


ΓòÉΓòÉΓòÉ 2.6.1. Print visible screen ΓòÉΓòÉΓòÉ

This command can also sent by pressing the Print Screen key. When Pmcomm
receives this message it prints all of the lines on the visible part of the
screen.


ΓòÉΓòÉΓòÉ 2.6.2. Print buffer ΓòÉΓòÉΓòÉ

When this is selected all of the scroll back buffer is sent out to the printer.
There are about 240 lines available in the scroll back buffer, so this command
may take awhile to complete. This does not mean that you can't do anything
else. Pmcomm will print in the background while you go on.


ΓòÉΓòÉΓòÉ 2.6.3. Print selected ΓòÉΓòÉΓòÉ

This will print previously selected text (by using the mouse) to the PRN
device.


ΓòÉΓòÉΓòÉ 2.7. About ΓòÉΓòÉΓòÉ

The about box has information about this program, such as BBS support telephone
number, company name, version number, and copyright information.


ΓòÉΓòÉΓòÉ 2.8. Exit ΓòÉΓòÉΓòÉ

Ends current session with Pmcomm. Pmcomm closes the comport when exiting which
drops dtr. The hang-up string is also sent to the modem.


ΓòÉΓòÉΓòÉ 3. Edit ΓòÉΓòÉΓòÉ

In this section there are commands such as Copy, Paste, and Clear_Screen.


ΓòÉΓòÉΓòÉ 3.1. Copy ΓòÉΓòÉΓòÉ

Copy transfers information from the screen and places it into the Clipboard.
Other applications can then use this information. For example, you may be
reading mail and want to use some of the information in a word processor.


ΓòÉΓòÉΓòÉ 3.2. Paste ΓòÉΓòÉΓòÉ

Paste, copies information from the clipboard and sends it out to the modem.
Care must be taken that the information sent can be handled by the remote
computer. A use for this command would be that you could enter a message in a
word processor, copy that message into the clipboard and then paste it into
Pmcomm.


ΓòÉΓòÉΓòÉ 3.3. Clear Screen ΓòÉΓòÉΓòÉ

Clears the whole screen including the scroll back buffer and resets the
attribute to the attribute defined in the setup area.


ΓòÉΓòÉΓòÉ 4. Connect ΓòÉΓòÉΓòÉ

This command allows you to connect to another computer, either through a modem,
using the Dial command or direct connect, using the Send_Break command.


ΓòÉΓòÉΓòÉ 4.1. Dial ΓòÉΓòÉΓòÉ

Dial uses a dialing_directory to store phone numbers and other information
about the computer.


ΓòÉΓòÉΓòÉ 4.1.1. Dial Dialog Help ΓòÉΓòÉΓòÉ

The dial dialog box allows you to add, select, modify, or delete entries in the
current dialing directory. An entry can also be selected to be automatically
selected (or optionally dialed) when Pmcomm is first started.

To add an entry, select the add button in the dialog box. You will  then be
prompted to enter the name of the new entry. The directory will be sorted and
the new entry will be selected. The cursor will be positioned at the number
entry field so that the number for the new entry can be entered. After the
number has been entered, pressing the enter key will save the dialing directory
and dial the number(s). Pressing the tab key will allow you to edit the other
fields.

To select a number, using a mouse, "click" on the number (or numbers) that you
wish  to dial. To deselect an entry "click" on the number once again. If you
are not using a mouse the arrow keys will move the highlight bar through the
directory. To select your choices hit the space bar, a second time will
deselect the entry, then hit enter. Multiple entries may be selected.  This
will form a dialing queue, in which Pmcomm will dial the selected entries until
a connection is made.

To modify an entry, select the entry to be edited and then use the tab key to
move the cursor to the field you wish to change. Use the Change button to
change the name of an entry.Pressing the save button will save the
modifications to the disk.

To change a name, select the entry to be edited and then use press the change
button. The change will automatically be saved to the disk.

To delete an entry, select the entry be deleted and select the delete button in
the dialog box.

CAUTION:
If multiple entries are selected, only the first selected entry will be
deleted.


ΓòÉΓòÉΓòÉ 4.1.2. Dial Prefix ΓòÉΓòÉΓòÉ

Pmcomm sends the selected dial prefix to the modem before sending the phone
number. The default string for the prefixes is ATDT which tells the modem to
dial using tone (ie. touch tone). If your phone system does not support touch
tone then you could use the ATDP command. Pmcomm allows you to setup multiple
prefixes, so that if you need to dial a special code for long distance calls
you can set up a separate prefix for those calls.


ΓòÉΓòÉΓòÉ 4.1.3. Dial Suffix ΓòÉΓòÉΓòÉ

Pmcomm sends the selected dial suffix to the modem after sending the phone
number. The default string for the suffixes is ^M which is a carriage
return,line feed.


ΓòÉΓòÉΓòÉ 4.1.4. Automatically Selected ΓòÉΓòÉΓòÉ

If a dialing entry is marked as being automatically selected, then each time
Pmcomm is started this entry will be selected to be dialed. You can have as
many entries automatically selected as you want, and this will form a dialing
queue. A dialing queue allows you to try the first number and if it is busy it
will then dial the next number in the queue.If the Dial Auto Selected Entries
on program Startup is selected then any entries in the dialing directory that
are marked as auto selected, will automatically be dialed. This option will
allow you to automatically dial selected numbers when Pmcomm is first invoked.


ΓòÉΓòÉΓòÉ 4.1.5. Dial List Box ΓòÉΓòÉΓòÉ

The Dial List Box is a multiple selection list box. This means that you can
select more then one entry at a time. The information on the right side of the
Dialog Box is on the first item selected. The reason for using a multiple
selection list box, is that you can select more then one item and these items
will be dialed in order. For example, if the first number selected is busy then
Pmcomm will dial the next number selected. If all selected numbers are busy,
Pmcomm will start over again. If you have multiple items selected and select
the Delete button, only the first item will be deleted. If an item is selected
and you double click on that item then the selected items will be dialed.


ΓòÉΓòÉΓòÉ 4.1.6. Baud Rate ΓòÉΓòÉΓòÉ

In the Dialing Dialog Box you can enter any baud supported by the device driver
you are using. Currently the maximum baud rate supported by the device driver
included with OS/2 is 19200. Commonly used baud rates are, 300, 1200, 2400,
9600, and 19200. There are some device drivers currently available that support
up to 38400. To enter a baud rate, type in a valid baud rate. The com port will
be set to this value when the phone number is dialed. In the Port Options
Dialog Box the above mentioned baud rates can be selected by using the radio
buttons.


ΓòÉΓòÉΓòÉ 4.1.7. Parity ΓòÉΓòÉΓòÉ

The supported parities are, None, Even, Odd, Marked, and Space. To enter a
parity type in one of the above words. The two most widely used parities are,
None and Even. If you are calling most BBS's you would want to enter None, but
most packet networks (such as CompuServe, and Telenet) normally require Even
parity.


ΓòÉΓòÉΓòÉ 4.1.8. Data Bits ΓòÉΓòÉΓòÉ

Currently supported data bits are 5, 6, 7, and 8. The most popular values are
7, and 8. For most BBS's, 8 would be the data bits, but for systems such as
CompuServe, 7 data bits are required.


ΓòÉΓòÉΓòÉ 4.1.9. Stop Bits ΓòÉΓòÉΓòÉ

Currently supported stop bits are 1, and 2. Most systems will require 1 stop
bit.


ΓòÉΓòÉΓòÉ 4.1.10. Dial Script ΓòÉΓòÉΓòÉ

The script name can be up to 12 characters long. The script must be in the
script path (see Paths for more information). Once Pmcomm is connected to the
remote computer this script will be executed.


ΓòÉΓòÉΓòÉ 4.1.11. Dial Terminal ΓòÉΓòÉΓòÉ

The currently available terminal emulations are, TTY, ANSI, and VT100. Pmcomm
will switch to the terminal emulation listed, once connected to the remote
computer.


ΓòÉΓòÉΓòÉ 4.2. Send Break ΓòÉΓòÉΓòÉ

Initializes a connection with another computer through a protocol converter.


ΓòÉΓòÉΓòÉ 5. Transfer ΓòÉΓòÉΓòÉ

Transfer allows the use of different protocols to send and receive files from a
remote computer. The protocol options are Xmodem_Checksum, Xmodem_CRC,
1K-Xmodem, Ymodem(batch), Ymodem-g(batch), Zmodem, CISB, and ASCII. Zmodem is
probably the best selection when available on the remote computer. Ymodem-G
should only be used with error correcting modems.


ΓòÉΓòÉΓòÉ 5.1. Download ΓòÉΓòÉΓòÉ

The download command brings up a dialog box for you to select the proper
protocol. If the protocol selected is not a batch protocol ( ASCII,
Xmodem_Checksum, Xmodem_CRC or 1K-Xmodem ) you will be prompted for a filename.
If you have Auto-Zmodem or Auto_CISB selected in the protocol options area,
Pmcomm will automatically start transferring as soon as the remote computer
starts to send. Zmodem is not available in the demonstration version.


ΓòÉΓòÉΓòÉ 5.1.1. Xmodem Checksum ΓòÉΓòÉΓòÉ

Xmodem Checksum is one of the oldest protocols around and some people still use
it exclusively. It is a moderately fast protocol that has fairly good error
detection.


ΓòÉΓòÉΓòÉ 5.1.2. Xmodem CRC ΓòÉΓòÉΓòÉ

Xmodem CRC and Xmodem_Checksum are similar except CRC has better error
detection then Checksum. Almost anywhere you call will offer at least one of
these protocols.


ΓòÉΓòÉΓòÉ 5.1.3. 1k-Xmodem ΓòÉΓòÉΓòÉ

1k-Xmodem uses the same error detection as Xmodem_CRC, but uses 1024 byte
blocks instead of 128 byte blocks. This allows for greater throughput (higher
characters per second) with roughly the same error detection.


ΓòÉΓòÉΓòÉ 5.1.4. Ymodem ΓòÉΓòÉΓòÉ

Ymodem uses the same error detection and block size as 1k-Xmodem, but is a
batch protocol. This means that in the first block the file size and name are
sent. This keeps the receiver from having to type in the filename. it also
allows you to send more then one file without have to start the transfer again.
This protocol is second to Zmodem, in our opinion, when using non-error
correcting modems.


ΓòÉΓòÉΓòÉ 5.1.5. Ymodem-g ΓòÉΓòÉΓòÉ

Ymodem-g is identical to Ymodem except it has no error correction. If an error
is detected the transfer aborts. Because of this Ymodem-g should only be used
with error correction modems. Pmcomm will allow you to use this protocol
anytime, but again care should be taken on what hardware it is used with. With
the proper hardware Ymodem-g has the fastest cps.


ΓòÉΓòÉΓòÉ 5.1.6. Zmodem ΓòÉΓòÉΓòÉ

Zmodem is almost as fast as Ymodem-g, however Zmodem does support error
correction and file recovery. It only takes one aborted Ymodem-g transfer to
lose all it's advantages. Zmodem has many advantages as for as the user is
concerned. It is probably the easiest protocol to use. If using Pmcomm with the
Auto-Zmodem download feature, the whole download is done automatically from the
Pmcomm end. You have to select the file from the sender (BBS etc..) and once
the sender starts sending, the transfer will begin on Pmcomm. It may take a
moment before the sender sends the first sequence, so wait a moment. Some of
the advanced features of Zmodem are listed below. Zmodem supports;

  1. CRC-32 and CRC-16. The additional error detection of 32 bit CRC is
     supported.

  2. File recovery. If a Zmodem download is aborted for any reason the transfer
     will resume at the point where it was  aborted. You don't have to start
     the whole transfer over.

  3. Auto-Download. When a Zmodem sending program starts up it first sends a rz
     and then a carriage return. Pmcomm will monitor for the startup sequence
     and automatically start the Zmodem download. Great care has been taken to
     make sure that it really is a Zmodem transfer and not someone typing it in
     at the keyboard (at either end). This feature makes downloading with
     Zmodem much faster and much easier.

  4. Variable length headers. This reduces the amount of overhead that accrues
     with sending Zmodem headers. This is only used if both the sender and
     receiver support it.

  5. RLE encoding. Run length encoding is a form of file compression. Instead
     of sending 20 spaces it will send a space and the number 20. The receiver
     will then decompress it. Because of the multi-thread (tasking)
     capabilities of OS/2 this works much better then with DOS. This also is
     only used if both the sender and receiver support it.

  6. Variable length receive buffers. Some Zmodem receive programs have
     problems with writing to the disk and receiving from the comport at the
     same time. If necessary Zmodem will wait for an ACK from the receiver
     after the specified buffer size has been sent. This will only be done if
     the receiver requests it.

  7. Retains original file size. Some people say that because Zmodem headers
     are larger that there is two much overhead. This really isn't the case.
     For example if comparing Zmodem to Ymodem-g (full flow Ymodem), Ymodem-g
     has less overhead with each packet. However Ymodem-g rounds the file size
     up to an even 128 byte size. In some cases it is even rounded up 1024
     bytes. This is done because Ymodem (g or other) only supports two block
     sizes, 128 and 1024 (the block size is actually 133 and 1029 to allow for
     the block header, STX or SOH, and the CRC value), so it has to send full
     blocks. However, Zmodem uses variable block sizes. The block sizes adjust
     from 32 bytes to 1024 bytes. If telephone line  quality is poor smaller
     blocks are sent so that if an error does occur less data will have to be
     resent. As the line quality improves the size of the blocks will be
     increased. The starting block size is variable depending on the connected
     baud rate.

  8. Error recovery. Because Zmodem can resend from any place in the file
     aborted transfers are rare.

 By reading this you can tell our favorite protocol is Zmodem. Once you have
 used Zmodem it's hard to get used to using other protocols.


ΓòÉΓòÉΓòÉ 5.1.7. ASCII ΓòÉΓòÉΓòÉ

The ASCII protocol can be used to transfer text files. There is no error
detection or correction available with this protocol. It is recommended that
one of the other protocols be used, even with text files.


ΓòÉΓòÉΓòÉ 5.1.8. CISB ΓòÉΓòÉΓòÉ

The CIS B protocol can be used to transfer files to and from CompuServe.
CompuServe B,B+ and Quick B are supported. Quick B is the fastest variant of
the B protocol and is automatically selected when it is supported on the host
computer. The CIS B protocol is an automatic protocol where the host initiates
the transfer and Pmcomm will automatically go into the send or receive mode. If
you are sending a file, the file must exist in the download directory of
Pmcomm. If Pmcomm is unable to find the file then the transfer will abort.
Pmcomm can be configured to ignore the CIS B protocol by deselecting the
Automatic CIS B option in the Protocol Option Dialog. Pmcomm may run slightly
faster in terminal mode without this selection. Under most systems the
difference will not be detectable. Another option for CIS B is for file
recovery. What this option will do is if you started a download and aborted the
transfer you can then re-start the transfer and CIS B will resume from the
place where it was aborted. This can be very handy in poor phone line
conditions. The packet size for CIS B is adjusted by the connecting baud rate.
For example if you are connected to CompuServe at 2400 baud the packet size
will be 1024 bytes. If you connect at 1200 baud the packet size will be 512
bytes. This allows for speedy error recovery in case a error occurs because on
phone line noise. Downloads will automatically be placed in the Pmcomm download
directory and the download directory will automatically searched for any
uploaded files. If you specify a path with the filename when  CompuServe asks
for a filename for your computer, then this path will be used. CIS B should be
the protocol used when transferring files to and from CompuServe.


ΓòÉΓòÉΓòÉ 5.1.9. Save to Dial Directory ΓòÉΓòÉΓòÉ

When this option is selected the file transfer protocol that is selected will
be saved into the dialing directory for this number. The next time a file
transfer is used when connected to this number this same protocol will be
selected and all the user will have to do is press the Ok button. If you do not
want this protocol save then deselect this option.


ΓòÉΓòÉΓòÉ 5.2. Upload ΓòÉΓòÉΓòÉ

When sending a file to a remote computer you must select the same protocol that
the remote computer will use to receive the file. After selecting the proper
protocol, a file open dialog box will have you select the file you wish to
send. You can either double click on the file name or select the file and click
on the OK button. If you have Auto_CISB selected in the protocol options area,
Pmcomm will automatically start the transfer as soon as the remote computer
sends the transfer request. With a CISB transfer the filename is specified on
the host and the file open dialog box is not displayed.


ΓòÉΓòÉΓòÉ 5.2.1. Xmodem Checksum ΓòÉΓòÉΓòÉ

Xmodem Checksum is one of the oldest protocols around and some people still use
it exclusively. It is a moderately fast protocol that has fairly good error
detection.


ΓòÉΓòÉΓòÉ 5.2.2. Xmodem CRC ΓòÉΓòÉΓòÉ

Xmodem CRC and Xmodem_Checksum are similar except CRC as better error detection
then Checksum. Almost anywhere you call will offer at least one of these
protocols.


ΓòÉΓòÉΓòÉ 5.2.3. 1k-Xmodem ΓòÉΓòÉΓòÉ

1k-Xmodem uses the same error detection as Xmodem_CRC, but uses 1024 byte
blocks instead of 128 byte blocks. This allows for greater throughput (higher
characters per second) with roughly the same error detection.


ΓòÉΓòÉΓòÉ 5.2.4. Ymodem ΓòÉΓòÉΓòÉ

Ymodem uses the same error detection and block size as 1k-Xmodem, but is a
batch protocol. This means that in the first block the file size and name are
sent. This keeps the receiver from having to type in the filename. it also
allows you to send more then one file without have to start the transfer again.
This protocol is second to Zmodem, in our opinion, when using non-error
correcting modems.


ΓòÉΓòÉΓòÉ 5.2.5. Ymodem-g ΓòÉΓòÉΓòÉ

Ymodem-g is identical to Ymodem except it has no error correction. If an error
is detected the transfer aborts. Because of this Ymodem-g should only be used
with error correction modems. Pmcomm will allow you to use this protocol
anytime, but again care should be taken on what hardware it is used with. With
the proper hardware Ymodem-g has the fastest cps.


ΓòÉΓòÉΓòÉ 5.2.6. Zmodem ΓòÉΓòÉΓòÉ

Zmodem is almost as fast as Ymodem-g, however Zmodem does support error
correction and file recovery. It only takes one aborted Ymodem-g transfer to
lose all it's advantages. Zmodem has many advantages as for as the user is
concerned. It is probably the easiest protocol to use. If using Pmcomm with the
auto-Zmodem download feature, the whole download is done automatically from the
Pmcomm end. You have to select the file from the sender (BBS etc..) and once
the sender starts sending, the transfer will begin on Pmcomm. It may take a
moment before the sender sends the first sequence, so wait a moment. Some of
the advanced features of Zmodem are listed below. Zmodem supports;

  1. CRC-32 and CRC-16. The additional error detection of 32 bit CRC is
     supported.

  2. File recovery. If a Zmodem download is aborted for any reason the transfer
     will resume at the point where it was  aborted. You don't have to start
     the whole transfer over.

  3. Auto-Download. When a Zmodem sending program starts up it first sends a rz
     and then a carriage return. Pmcomm will monitor for the startup sequence
     and automatically start the Zmodem download. Great care has been taken to
     make sure that it really is a Zmodem transfer and not someone typing it in
     at the keyboard(at either end). This feature makes download with Zmodem
     much faster and much easier.

  4. Variable length headers. This reduces the amount of overhead that accrues
     with sending Zmodem headers. This is only used if both the sender and
     receiver support it.

  5. RLE encoding. Run length encoding is a form of file compression. Instead
     of sending 20 spaces it will send a space and the number 20. The receiver
     will then decompress it. Because of the multi-thread(tasking) capabilities
     of OS/2 this works much better then with DOS. This also is only used if
     both the sender and receiver support it.

  6. Variable length receive buffers. Some Zmodem receive programs have
     problems with writing to the disk and receiving from the comport at the
     same time. If necessary Zmodem will wait for an ACK from the receiver
     after the specified buffer size has been sent. This will only be done if
     the receiver requests it.

  7. Retains original file size. Some people say that because Zmodem headers
     are larger that there is two much overhead. This really isn't the case.
     For example if comparing Zmodem to Ymodem-g (full flow Ymodem), Ymodem-g
     has less overhead with each packet. However Ymodem-g rounds the file size
     up to an even 128 byte size. In some cases it is even rounded up 1024
     bytes. This is done because Ymodem (g or other) only supports two block
     sizes, 128 and 1024 (the block size is actually 133 and 1029 to allow for
     the block header, STX or SOH, and the CRC value), so it has to send full
     blocks.

  8. Error recovery. Because Zmodem can resend from any place  in the file
     aborted transfers are rare.

  9. Variable block sizes. The block sizes adjust from 32 bytes to 1024 bytes.
     If telephone line quality is poor smaller blocks are sent so that if an
     error does occur less data will have to be resent. As the line quality
     improves the size of the blocks will be increased. The starting block size
     is variable depending on the connected baud rate.

 By reading this you can tell our favorite protocol is Zmodem. Once you have
 used Zmodem it's hard to get used to using other protocols.


ΓòÉΓòÉΓòÉ 5.2.7. ASCII ΓòÉΓòÉΓòÉ

The ASCII protocol can be used to transfer text files. There is no error
detection or correction available with this protocol. It is recommended that
one of the other protocols be used, even with text files.


ΓòÉΓòÉΓòÉ 5.2.8. CISB ΓòÉΓòÉΓòÉ

The CIS B protocol can be used to transfer files to and from CompuServe.
CompuServe B,B+ and Quick B are supported. Quick B is the fastest variant of
the B protocol and is automatically selected when it is supported on the host
computer. The CIS B protocol is an automatic protocol where the host initiates
the transfer and Pmcomm will automatically go into the send or receive mode. If
you are sending a file, the file must exist in the download directory of
Pmcomm. If Pmcomm is unable to find the file then the transfer will abort.
Pmcomm can be configured to ignore the CIS B protocol by deselecting the
Automatic CIS B option in the Protocol Option Dialog. Pmcomm may run slightly
faster in terminal mode with out this selection. Under most systems the
difference will not be detectable. Another option for CIS B is for file
recovery. What this option will do is if you started a download and aborted the
transfer you can then re-start the transfer and CIS B will resume from the
place where it was aborted. This can be very handy in poor phone line
conditions. The packet size for CIS B is adjusted by the connecting baud rate.
For example if you are connected to CompuServe at 2400 baud the packet size
will be 1024 bytes. If you connect at 1200 baud the packet size will be 512
bytes. This allows for speedy error recovery in case a error occurs because on
phone line noise. Downloads will automatically be placed in the Pmcomm download
directory and the download directory will automatically searched for any
uploaded files. If you specify a path with the filename when  CompuServe asks
for a filename for your computer, then this path will be used. CIS B should be
the protocol used when transferring files to and from CompuServe.


ΓòÉΓòÉΓòÉ 5.2.9. Save to Dial Directory ΓòÉΓòÉΓòÉ

When this option is selected the file transfer protocol that is selected will
be saved into the dialing directory for this number. The next time a file
transfer is used when connected to this number this same protocol will be
selected and all the user will have to do is press the Ok button. If you do not
want this protocol save then deselect this option.


ΓòÉΓòÉΓòÉ 6. Hangup ΓòÉΓòÉΓòÉ

Hang-up sends the hang-up command string (see the Option menu) and optionally
drops the dtr line to the modem. Dropping dtr is the most effective is your
modem is setup to hang-up when dtr is dropped. Using a hang-up string is also
slower, because Pmcomm has to get the modem into the command state before
sending the hang-up string. If you have dtr on and delete the hang-up string
the hang-up will be much faster. The default string is : +++~~~~ATH^M. The +++
is the default modem attention string, which puts the modem into the command
state. The ~~~~ will make Pmcomm pause 2 seconds (.5 seconds per ~) and then
the ATH will force the modem to go on-hook (hangup). The ^M sends a carriage
return line feed combination.


ΓòÉΓòÉΓòÉ 7. Options ΓòÉΓòÉΓòÉ

Option allows you to tailor Pmcomm to your own tastes. The areas in option are
Port, Dial_Setup, Modem, Protocols, Paths, Macros_Setup, Screen, Terminal,
Color, Font, and Chat. The setup is not automatically saved. This allows you to
change things temporally without changing your default setup file. If you do
want to make the  changes permanent be sure to save the setup file. To save the
current setup file,  use the Save_setup command under the File menu option.


ΓòÉΓòÉΓòÉ 7.1. Port ΓòÉΓòÉΓòÉ

The device name should be a valid com device name. Some third party device
drivers allow you to use names other then COM1, COM2, etc., so Pmcomm does not
limit you to these names. Hardware flow control and dtr should be on for most
modems. There are currently a couple third party device drivers that support
38400 baud, so Pmcomm has been made to support this.


ΓòÉΓòÉΓòÉ 7.1.1. Device Name ΓòÉΓòÉΓòÉ

The device name should be a valid com device name. Some third party device
drivers allow you to use, and in some cases require that you uses, names other
then COM1, COM2, etc., so Pmcomm does not limit you to these names. If you are
using Pmcomm across a LAN then normally there will be an Alias name for the com
port you are using on the server. See your LAN administrator for the Alias
name(s) that you should use to access the modem(s).


ΓòÉΓòÉΓòÉ 7.1.2. Hardware Flow Control ΓòÉΓòÉΓòÉ

Hardware Flow Control is generally the most reliable method of flow control.
There are two basic times when flow control is needed. First if Pmcomm is
sending information to the modem faster then the modem is able to send the
information flow control is needed. If flow control is not enabled then a
transmission error will occur. Second if the modem is sending information to
Pmcomm faster then Pmcomm can receive it, then Pmcomm will try to tell the
modem to stop sending the information. This can occur when an excessive about
of processing is being preformed on the computer. Hardware Flow Control uses
two modem signals to control the flow of information. For send flow control the
CTS modem line is used. For receive flow control the RTS modem line is used. If
your modem supports these flow control signals, then setup your modem and
Pmcomm for Hardware Flow Control.


ΓòÉΓòÉΓòÉ 7.1.3. XON/XOFF Flow Control ΓòÉΓòÉΓòÉ

Xon/Xoff Flow Control should only be used when Hardware_Flow_Control is not
available and when flow control is necessary. The only two file transfers that
will work correctly with Xon/Xoff are ASCII and Zmodem. The only other protocol
that should need flow control is Ymodem-g.


ΓòÉΓòÉΓòÉ 7.1.4. Use DTR ΓòÉΓòÉΓòÉ

DTR stands for Data Terminal Ready, which by lowering DTR you can signal the
device you are communicating with( usually a modem) that you wish to go off
line. If you are connected to a modem, you should set the modem up to go
on-hook when the modem detects a drop in DTR. The command for a Hayes 2400 baud
modem is AT&D2. If this option is selected in Pmcomm, then DTR will be dropped
when the hangup command is selected, or after each redial attempt.


ΓòÉΓòÉΓòÉ 7.1.5. Monitor DCD ΓòÉΓòÉΓòÉ

DCD stands for Data Carrier Detect and is pin 8 on an RS-232C cable. When a
carrier is detected by the modem, Pmcomm assumes that you are connected to a
remote computer. If DCD is not supported by your modem or other hardware, then
this option should be turned off. With this option turned on, if no DCD is
present then Pmcomm will not Hangup, or go into a file transfer. The command
for a Hayes 2400 baud modem is AT&C1. This will have the modem track the state
of DCD.


ΓòÉΓòÉΓòÉ 7.1.6. 8/N/1 ΓòÉΓòÉΓòÉ

This selection means 8 data bits, No parity, 1 stop bit. This option will be
overridden with the parameters listed in the dialing directory once you have
connected with a remote computer.


ΓòÉΓòÉΓòÉ 7.1.7. 7/E/1 ΓòÉΓòÉΓòÉ

This selection means 7 data bits, Even parity, 1 stop bit. This option will be
overridden with the parameters listed in the dialing directory once you have
connected with a remote computer.


ΓòÉΓòÉΓòÉ 7.2. Dial Setup ΓòÉΓòÉΓòÉ

This allows you to select a dialing_directory from a list box and also lets you
setup the prefix and suffix of the number to be dialed. There is a list box
that will allow you to select how the dialing directory will be sorted. You can
sort the dialing directory by, name number, baud rate, last on, number of times
called,download cps, upload cps,dial prefix, and dial suffix. You can also
select either ascending or descending order.


ΓòÉΓòÉΓòÉ 7.2.1. Dial Auto Selected Entries ΓòÉΓòÉΓòÉ

If the Dial Auto Selected Entries on program Startup is selected then any
entries in the dialing directory that are marked as automatically_selected ,
will automatically be dialed. This option will allow you to automatically dial
selected numbers when Pmcomm is first invoked. This can be very useful if you
dial the same numbers each time you run Pmcomm.


ΓòÉΓòÉΓòÉ 7.2.2. Sort Dialing Directory ΓòÉΓòÉΓòÉ

The dialing_directory can be sorted by either the name, phone number, baud
rate, last time called, number of times called, download characters per second,
upload characters per second, dial prefix, or dial suffix. The directory can be
sorted in either ascending or descending order. For example you can sort the
dialing directory by last time called in descending order, and all the most
recently called numbers will be displayed at the top of the dialing directory.


ΓòÉΓòÉΓòÉ 7.2.3. Dialing Directory List ΓòÉΓòÉΓòÉ

A list of the available dialing_directories are displayed in a list box, so
that a default directory can be selected. The selected directory will
automatically be loaded when Pmcomm is started. You can add additional
directories by pressing the add button.


ΓòÉΓòÉΓòÉ 7.3. Modem ΓòÉΓòÉΓòÉ

Initialization string should have the commands in it to enable word result
codes, hang-up when dtr is dropped and enable hardware flow control. Not all of
these are supported by all modems, but use them when possible. Pause before
redial is the time Pmcomm waits before trying to re-dial a number. Seconds to
wait for carrier is how long  Pmcomm will wait for a connection before
redialing.


ΓòÉΓòÉΓòÉ 7.3.1. Modem Initialization String ΓòÉΓòÉΓòÉ

Initialization string should have the commands in it to enable word result
codes, hang-up when dtr is dropped and enable hardware flow control. Not all of
these are supported by all modems, but use them when possible. The default
modem string is for a Hayes 2400 baud modem. This is the default string :

 AT&F&D2&C1M0Q0S2=255S10=30X4

 For a Courier HST the following string should be entered.

 AT&FM0&B1&H1&K0&R2&S1&Y0S2=43S10=30X4

 This allows everything to be transferred to the modem at 19200 no matter what
 the connect baud is. This setting will give you the max through-put even at
 lower baud rates. To write this into memory of the HST run Pmcomm and then
 enter AT&F&W. This will set the NRAM to the factory defaults. Then type in the
 setup string and press enter. To save this to the NRAM enter AT&W. Then all
 you have to have for a initialization string in Pmcomm is an ATZ, which will
 restore these settings from the NRAM. On the HST I have the DIP switches set
 as follows:

 up: 1,2,4,6,7,9,10
 down: 3,5,8

 For a Hayes 9600 V.42 modem the following string should be entered.

 AT&F&K3W1&C1&D2S36=7S0=0S2=255S7=30M0S10=30X4N1


ΓòÉΓòÉΓòÉ 7.3.2. Modem Pause Before Redial ΓòÉΓòÉΓòÉ

Pmcomm will pause for the specified number of seconds before attempting to
redial a phone number. Some phone systems take a few seconds before you can
redail a phone number. The default value is 3 seconds and should work for most
phone systems.


ΓòÉΓòÉΓòÉ 7.3.3. Modem Dial Timeout ΓòÉΓòÉΓòÉ

Pmcomm will wait for a Connect or Carrier message from the modem for up to 64
seconds. The S7 register of the modem must also be set to a value at least as
great as the dial timeout value. This can be done by issueing the following
command to the modem: ATS7=30. This would set the modem to timeout after 30
seconds. Setting the dial timeout to a value greater then 30 would not be
effective, because the modem would still timeout after 30 seconds. The default
timeout value for Pmcomm is 60 seconds.


ΓòÉΓòÉΓòÉ 7.4. Protocols ΓòÉΓòÉΓòÉ

The options under protocols are;

 Auto Zmodem Download.

 Zmodem file recovery.

 Zmodem CRC-32.

 Zmodem CRC-16.

 Auto CISB Transfer.

 CISB file recovery.

 Import File line delay.

 Auto Zmodem makes Pmcomm check for a Zmodem start sequence. When received
 Pmcomm automatically starts receiving the file. Zmodem file recovery allows
 Zmodem to resume a file transfer that was previously aborted. CRC-32 has
 improved error correction, but is slightly slower. If CRC-32 is not available
 Pmcomm will switch to CRC-16. Zmodem is only available on registered versions.
 Auto CISB is similar to Auto Zmodem except that both uploads and downloads can
 be started this way. This feature is for the CISB file transfer protocol. CISB
 file recovery allows CISB to resume a file transfer that was previously
 aborted.


ΓòÉΓòÉΓòÉ 7.5. Paths ΓòÉΓòÉΓòÉ

The download path allows you to have the files that you download, put into a
different directory. The script path is where Pmcomm looks for the scripts
listed in the dialing directory. If a script called startup.scr exists in this
directory then it will be executed each time Pmcomm is started. The capture
path is where all screen captures are stored. These paths must contain a valid
directory. It defaults to the directory that Pmcomm was started from. There is
also a call logging option here which when turned on will start call logging as
soon as Pmcomm is run.


ΓòÉΓòÉΓòÉ 7.6. Macros Setup ΓòÉΓòÉΓòÉ

There are 10 user definable keyboard macros. These can be invoked by holding
down the Alt key and pressing 0-9. Use ^M to send a carriage return. When the
macro is invoked it will send the string that you have defined to the modem.
Once you  have setup the macro string, it can also be selected from the main
menu using a mouse. Other special characters are:

^H = tab character. ^J = carriage return without a line feed. ^L = form feed.
^[ = escape character (Ascii 27) ^C = send the Ctrl-C character (Ascii 3) ^K =
XON character ^S = XOFF character ~  = sleep for half a second

You can also send any other special character by holding down the Alt key and
typing in the Ascii number on the numeric key pad. For example if you want to
enter the escape character into a macro you could hold down the Alt key and
then press the two and the seven on the numeric key pad (while still holding
down the Alt key). When you then release the Alt key the escape character would
be inserted into the marco.


ΓòÉΓòÉΓòÉ 7.7. Screen ΓòÉΓòÉΓòÉ

This command allows you to tailor the screen handling to your tastes. The best
thing to do is try them to see if you like them. Some features like the
automatic horizontal scroll will probably only be used when typing messages and
chatting. The hide window while dialing, and the hide window during a file
transfer, will make the screen less "busy" while these tasks are going on. The
Automatic vertical scroll, will make Pmcomm keep the cursor vertically in the
Pmcomm window. The Automatic horizontal scroll will do the same thing only
horizontally. The retain dialing dialog's position, will make Pmcomm restore
the last position of the dialing dialog each time it is invoked. The same thing
happens to the transfer dialog box if that selection is checked. If these
options are not selected then OS/2 will decide where to place the dialog boxes.
The Show Dial Message Box, makes Pmcomm display a message box and beeps at the
user,when Pmcomm obtains a remote connection, until the OK button is pressed.
This will make sure you notice that Pmcomm has a remote connection. The local
echo on will make Pmcomm echo all keystrokes to the local screen as well as to
the remote computer. The turn sound on option will make Pmcomm alert the user
when certain functions have been completed. The sound must also be turned on in
OS/2 for this option to work. This can be done through the control panel.


ΓòÉΓòÉΓòÉ 7.8. Terminal ΓòÉΓòÉΓòÉ

Terminal allows you to select which emulation you wish to use. There are also
some options for the different emulations.


ΓòÉΓòÉΓòÉ 7.8.1. TTY emulation ΓòÉΓòÉΓòÉ

The TTY emulation makes Pmcomm act as a teletype device. Generally this is the
least used emulation, but it is also the fastest. The reason for this is that
there are very few special commands that Pmcomm has to process. None of the
special ANSI control codes are processed.


ΓòÉΓòÉΓòÉ 7.8.2. ANSI emulation ΓòÉΓòÉΓòÉ

The ANSI emulation is probably the most used. It will execute the special ANSI
screen control commands. This allows the remote program to be able to clear the
screen, position the cursor, and change the colors. There are other screen
control commands also, but those are the most commonly used ones. There are
also options to have Pmcomm ignore the ANSI color changes, so that you can use
the colors you want, instead of the ones the remote computer uses, and to send
the ANSI cursor position commands with the arrow keys. When using the ANSI
emulation you can also have Pmcomm strip off the ANSI commands before saving
the information into a capture file. This will make the capture file much more
readable. You can also change the length of the page, to correspond to the size
of your screen. The default for the ANSI page length is 25 lines, and under
most cases should be left there.


ΓòÉΓòÉΓòÉ 7.8.3. VT100 emulation ΓòÉΓòÉΓòÉ

In VT100 emulation, some keys have been changed to try to more closely emulate
the VT100 keyboard. F1-F4 are now the PF keys. Because of this the F1 key will
not display the normal help, and F3 will not exit the program. The PF keys will
send the following characters:

   F1 = ESCOP

   F2 = ESCOQ

   F3 = ESCOR

   F4 = ESCOS

 Where ESC is equal to the ASCII character hex 1B. All other hot keys will not
 be available. When the num lock key is off the numerical key pad will be in
 the application mode. If you are connecting to a VT220 Host you can use these
 keys to send the VT220 PF key values. For example pressing the 1 on the
 numeric key pad will send the VT220 PF1 key. Pressing the 3 on the numeric key
 pad will send the VT220 PF3 key, and so on.With the num lock on the numbers
 will be sent. The plus key has been re-mapped to be a comma, again to be
 compatible with the VT100 keyboard. In most cases it is best to tell the host
 that you are a VT220 terminal. The VT100 emulation of Pmcomm supports most of
 the VT220 commands, and will allow you to use the extra support that VT220
 allows. If you tell the host that you are a VT220 terminal, for example, you
 will be able to use the Ctrl-R for reset and the Ctrl-C for clear. These are
 just a couple of examples of the additional benefit that you can get from
 VT220.

 The send DEL for backspace option is the default for many VT100 keyboards.
 When this is selected, Pmcomm will send a hex 7f character instead of the
 backspace character. You can still send a backspace character by pressing
 Ctrl-Backspace. This allows you to have both these characters available at one
 time.

 The translate CR/LF for LF option will act as if it received a carriage return
 and a line feed, each time it receives a line feed.

 The line wrap option will make Pmcomm wrap the line if the line is longer then
 the page width is. If this option is off the line will be truncated.

 The Insert mode option will allow you to insert characters into the middle of
 a line and the rest of the line will be shifted to the right to allow room for
 the new characters.

 The cursor visible option determines if the cursor will be shown on the screen
 or not.

 The Screen origin relative option determines if Pmcomm will keep everything on
 a 25 line screen or allow it to use the scroll back buffer. In most cases this
 option should be selected.

 The last two options are to set the width of the screen. Either 80 or 132
 columns are supported.

 Most of these options can be changed from the host. The default setup should
 work for most applications, and the host can change the options to meet
 different needs.


ΓòÉΓòÉΓòÉ 7.9. Color ΓòÉΓòÉΓòÉ

Allows you to set the background and foreground colors for the screen. There
are 16 different background and foreground colors available, allowing for 256
different color combinations.


ΓòÉΓòÉΓòÉ 7.9.1. Foreground ΓòÉΓòÉΓòÉ

Sets up the color to be used for the text used in the Pmcomm window.


ΓòÉΓòÉΓòÉ 7.9.2. Background ΓòÉΓòÉΓòÉ

Sets up the color to be used for the Pmcomm window background.


ΓòÉΓòÉΓòÉ 7.10. Font ΓòÉΓòÉΓòÉ

Allows you to select either a large or small font. If you use the small font
you more lines of text will be displayed on the same size of window. The large
font,however is more readable on most video adapters.


ΓòÉΓòÉΓòÉ 7.11. Chat ΓòÉΓòÉΓòÉ

This sets up Pmcomm to "chat" when connected to another computer that is also
running Pmcomm. This mode automatically sets Pmcomm to echo characters locally
and to send a carriage return line feed combination when the enter key is
pressed.


ΓòÉΓòÉΓòÉ 8. Macros ΓòÉΓòÉΓòÉ

Allows you to pick, with a mouse, the macro you wish to send. Can also be
selected with an Alt+corresponding number keystroke. Pmcomm allows you to set
up ten different macros.


ΓòÉΓòÉΓòÉ 9. Script Syntax ΓòÉΓòÉΓòÉ

Both, internal and REXX, syntaxes are described in this section.


ΓòÉΓòÉΓòÉ 9.1. REXX Functions ΓòÉΓòÉΓòÉ

This describes the function calls that are available in the rxpmcomm.dll.
Before using any of these calls you must include these lines in your REXX
program:

 Call RxFuncadd " init_dll ","RxPmcomm","init_dll"

 Parse arg port portname screen_handle dde semaphore

 Call init_dll

 The rxpmcomm.dll must reside in a directory listed in your LIBPATH statement
 in config.sys. One of the default directories is \os2\dll. These functions are
 designed to make it easier to preform tasks necessary when writing scripts for
 asynch communications. To invoke a REXX program from a script, use the shell(
 ) function in the script. The format of the shell function is as follows:
 shell("\path\filename.cmd"); where filename.cmd is your REXX program. These
 functions have been tested with the REXX that comes with OS/2 1.2 EE, but
 should work with any totally function compatible REXX. There are some sample
 REXX programs included.


ΓòÉΓòÉΓòÉ 9.1.1. init_dll ΓòÉΓòÉΓòÉ

The init_dll function will register the functions in the rxpmcomm.dll, with
REXX. This function must be called before any other rxpmcomm.dll function is
called. The RxFuncadd must be called before init_dll to register this function
with REXX.


ΓòÉΓòÉΓòÉ 9.1.2. os2_shell ΓòÉΓòÉΓòÉ

 os2_shell port,port

 Example

 Call os2_shell port,port

 Description

 This command will allow a caller to shell to OS/2, remotely. The first
 parameter is input handle and the second is the output handle. In the example
 above, the command will receive and send the information to the com port.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.3. set_download_path ΓòÉΓòÉΓòÉ

 set_download_path directory,dde

 Example

 Call set_download_path "c:\pmcomm",dde

 Description

 The above example will set the download path to c:\pmcomm. This will store all
 of the files received in that directory. The dde, is the dde value passed on
 the command line.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.4. setcom ΓòÉΓòÉΓòÉ

 setcom baud,parity,data_bit,stop_bits,port

 Example

 Call setcom "2400","N","8","1",port

 Description

 This would set the com port to 2400 baud,no parity,8 data bits, 1 stop bit.
 Baud can be from 300 to 19200 with the standard OS/2 device driver. Parity can
 be N(none), O(odd), E(even), M(marked), or S(spaced). Data bits can be 5, 6, 7
 or 8. Stop bits can be 1, 1.5, or 2 (1.5 and 2 can only be use with 5 data
 bits). If a parameter is an empty string i.e. setcom "","E","7","1",port this
 leave the baud at the current rate but set the line characteristics to 7,
 Even, 1.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.5. sendb ΓòÉΓòÉΓòÉ

 sendb length,port

 Example

 Call sendb "300",port

 Description

 This call sends a break signal a certain time in milliseconds. The above
 example would send a break signal for 300 milliseconds. This call is mostly
 used to establish direct connects (not using a modem). Three hundred
 milliseconds should be ok for most situations.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.6. dcd ΓòÉΓòÉΓòÉ

 dcd port

 Example

 Call dcd port

 Description

 This call checks to see if there is a carrier detected on the modem. You can
 use this to see if Pmcomm is still online to a remote computer. For this
 information to be correct the modem must support dcd and the modem must be
 configured to support dcd. To find the command refer to your owner's manual.

 Returns

 1 if carrier detected and 0 if no carrier.


ΓòÉΓòÉΓòÉ 9.1.7. char_avail ΓòÉΓòÉΓòÉ

 char_avail port

 Example

 Call char_avail port

 Description

 This call checks to see how many characters are available in the device
 drivers receive buffer. You can use this function to check to see if the
 device driver has received any characters from the com port.

 Returns

 Number of characters in device driver receive queue.


ΓòÉΓòÉΓòÉ 9.1.8. read_timeout ΓòÉΓòÉΓòÉ

 read_timeout timeout,port

 Example

 Call read_timeout 20000,port

 Description

 This call sets the length of time (in milliseconds) that wait_for, wait_fore,
 Get_ch will wait for a character from the com port. The above example will
 make the functions wait for 20 seconds.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.9. Get_ch ΓòÉΓòÉΓòÉ

 Get_ch port

 Example

 Call Get_ch port

 Description

 This call will get a character from the com port. If no character is available
 by the time set with read_timeout the function will return with a value of -1.
 Otherwise the function will return with the character read.

 Returns

 char value if successful and -1 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.10. ring_detect ΓòÉΓòÉΓòÉ

 ring_detect port

 Example

 Call ring_detect port

 Description

 This call can be used to inform a program if the phone is ringing.

 Returns

 1 if ring detected, 0 if no ring, and 2 if invalid number of parameters.


ΓòÉΓòÉΓòÉ 9.1.11. drop_dtr ΓòÉΓòÉΓòÉ

 drop_dtr port

 Example

 Call drop_dtr port

 Description

 This call is usually used to make a modem hang up. The modem must be
 configured to allow this. To find the command for your modem, check your
 owner's manual. Dtr needs to be dropped for about 2-3 seconds to make sure the
 modem sees the drop in dtr. After that length of time raise_dtr can be called
 to bring dtr back up. On a Hayes 2400 the above command will also keep the
 modem from doing an auto answer until you raise_dtr again.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.12. raise_dtr ΓòÉΓòÉΓòÉ

 raise_dtr port

 Example

 Call raise_dtr port

 Description This call is usually used after drop_dtr to allow the modem to
 process commands and enable it to answer the phone.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.13. Wait_for (REXX) ΓòÉΓòÉΓòÉ

 Wait_for string,string,string...,port

 Example

 Call Wait_for "first name?","last name?",port

 Description

 The above example would wait for either first name?, or last name?, from the
 com port. The function will return the index of the  string that matched. For
 example if the Wait_for received last name?, then the result would be 2. You
 can specify any number of strings depending on memory available.

 Returns

 Index of matched string or zero if timeout or error.


ΓòÉΓòÉΓòÉ 9.1.14. Wait_fore ΓòÉΓòÉΓòÉ

 Wait_fore string,string,string...,port,screen_handle

 Example

 Call Wait_fore "first name?","last name?",port,screen_handle

 Call Wait_fore "first name?",port,1

 Description

 The first example would wait for either first name?, or last name?, from the
 com port and echo the out_put to the Pmcomm screen. The second example would
 do the same except it would write the out put to StdOut(value 1) which would
 be the REXX screen.

 Returns

 Index of matched string or zero if timeout or error.


ΓòÉΓòÉΓòÉ 9.1.15. Put_s ΓòÉΓòÉΓòÉ

 Put_s string,port

 Example

 Call Put_s "first name",port

 Description

 This call will send string out to port. In the above example first name will
 be sent to the com port. If port is not specified then 'string' will be sent
 to the REXX screen. If screen_handle is specified instead of port then the
 string will be sent to the Pmcomm screen.

 Returns

 Length of string actually written.


ΓòÉΓòÉΓòÉ 9.1.16. Sleep (REXX) ΓòÉΓòÉΓòÉ

 Sleep time

 Example

 Call Sleep "1000"

 Description

 This call will delay the program for the amount of milliseconds specified. The
 above example will delay the computer for one second.

 Returns

 Unconditionally 0.


ΓòÉΓòÉΓòÉ 9.1.17. beep ΓòÉΓòÉΓòÉ

 beep frequency,duration

 Example

 Call beep 495,100

 Description

 The above example will beep the speaker.

 Returns

 1 if successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.18. xmodem_send ΓòÉΓòÉΓòÉ

 xmodem_send filename,dde,semaphore

 Example

 Call xmodem_send "filename.ext",dde,semaphore

 Description

 This call will invoke the Xmodem_CRC send routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 uploading from the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.19. xmodem_receive ΓòÉΓòÉΓòÉ

 xmodem_receive filename,dde,semaphore

 Example

 Call xmodem_receive "filename.ext",dde,semaphore

 Description

 This call will invoke the Xmodem_CRC receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. The file name specified must not include a path.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.20. xmodem_1k_send ΓòÉΓòÉΓòÉ

 xmodem_1k_send filename,dde,semaphore

 Example

 Call xmodem_1k_send "filename.ext",dde,semaphore

 Description

 This call will invoke the 1K-Xmodem send routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 uploading from the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.21. xmodem_1k_receive ΓòÉΓòÉΓòÉ

 xmodem_1k_receive filename,dde,semaphore

 Example

 Call xmodem_1k_receive "filename.ext",dde,semaphore

 Description

 This call will invoke the 1K-Xmodem receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. The file name specified must not include a path.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.22. ymodem_send ΓòÉΓòÉΓòÉ

 ymodem_send filename,dde,semaphore

 Example

 Call ymodem_send "filename.ext",dde,semaphore

 Description

 This call will invoke the Ymodem send routine, built into Pmcomm. Once issued
 the call will not return until the transfer either finishes or is aborted.
 Pmcomm will show the normal transfer dialog that it does when uploading from
 the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.23. ymodem_receive ΓòÉΓòÉΓòÉ

 ymodem_receive dde,semaphore

 Example

 Call ymodem_receive dde,semaphore

 Description

 This call will invoke the Ymodem receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. This one call will receive multiple files. The filenames used are
 the ones sent from the remote computer.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.24. ymodemg_send ΓòÉΓòÉΓòÉ

 ymodemg_send filename,dde,semaphore

 Example

 Call ymodemg_send "filename.ext",dde,semaphore

 Description

 This call will invoke the Ymodem-g send routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 uploading from the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.25. ymodemg_receive ΓòÉΓòÉΓòÉ

 ymodemg_receive dde,semaphore

 Example

 Call ymodemg_receive dde,semaphore

 Description

 This call will invoke the Ymodem-g receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. This one call will receive multiple files. The filenames used are
 the ones sent from the remote computer.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.26. zmodem_send ΓòÉΓòÉΓòÉ

 zmodem_send filename,dde,semaphore

 Example

 Call zmodem_send "filename.ext",dde,semaphore

 Description

 This call will invoke the Zmodem send routine, built into Pmcomm. Once issued
 the call will not return until the transfer either finishes or is aborted.
 Pmcomm will show the normal transfer dialog that it does when uploading from
 the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.27. zmodem_receive ΓòÉΓòÉΓòÉ

 zmodem_receive dde,semaphore

 Example

 Call zmodem_receive dde,semaphore

 Description

 This call will invoke the Zmodem receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. This one call will receive multiple files. The filenames used are
 the ones sent from the remote computer.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.28. ascii_send ΓòÉΓòÉΓòÉ

 ascii_send filename,dde,semaphore

 Example

 Call ascii_send "filename.ext",dde,semaphore

 Description

 This call will invoke the ASCII send routine, built into Pmcomm. Once issued
 the call will not return until the transfer either finishes or is aborted.
 Pmcomm will show the normal transfer dialog that it does when uploading from
 the menu.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.1.29. ascii_receive ΓòÉΓòÉΓòÉ

 ascii_receive filename,dde,semaphore

 Example

 Call ascii_receive "filename.ext",dde,semaphore

 Description

 This call will invoke the ASCII receive routine, built into Pmcomm. Once
 issued the call will not return until the transfer either finishes or is
 aborted. Pmcomm will show the normal transfer dialog that it does when
 downloading from the menu. The file will be downloaded into the download
 directory. The file name specified must not include a path.

 Returns

 1 if call is successful and 0 if unsuccessful.


ΓòÉΓòÉΓòÉ 9.2. Internal Functions ΓòÉΓòÉΓòÉ

These are script functions that are built into Pmcomm.


ΓòÉΓòÉΓòÉ 9.2.1. wait_for (internal) ΓòÉΓòÉΓòÉ

 wait_for("string");

 This will wait until the word 'string' is received. One use of this is when
 logging onto a BBS you can have it wait until prompted for a first name.


ΓòÉΓòÉΓòÉ 9.2.2. puts ΓòÉΓòÉΓòÉ

 puts("string");

 This will send string to the comport. The 'C' language special character
 '\r','\n','\b',and '\a' can also be used.

 The \r means carriage return.

 The \n means carriage return and line feed combination.

 The \b means backspace.

 The \a means alert (Pmcomm will beep).


ΓòÉΓòÉΓòÉ 9.2.3. sleep (internal) ΓòÉΓòÉΓòÉ

 sleep(1000);

 This will wait for the number of milliseconds specified. In this example it
 would sleep for one second.


ΓòÉΓòÉΓòÉ 9.2.4. call ΓòÉΓòÉΓòÉ

 call("filename");

 This allows you to nest scripts. If you put the name of the script that you
 want to execute where it says filename, it will execute that script and then
 continue. The limit on number of nested scripts is only by available stack
 space.


ΓòÉΓòÉΓòÉ 9.2.5. capture_on ΓòÉΓòÉΓòÉ

 capture_on("filename");

 Captures all screen output to a file. Replace filename with the name of the
 file you want the output written to.


ΓòÉΓòÉΓòÉ 9.2.6. capture_off ΓòÉΓòÉΓòÉ

 capture_off();

 Stops screen capture and closes the capture file.


ΓòÉΓòÉΓòÉ 9.2.7. shell ΓòÉΓòÉΓòÉ

 shell("\path\filename.ext");

 Allows you to call an external program to run from a script.


ΓòÉΓòÉΓòÉ 9.3. Sample Scripts ΓòÉΓòÉΓòÉ

These are scripts to help you, when you start to write your own scripts.


ΓòÉΓòÉΓòÉ 9.3.1. REXX Sample ΓòÉΓòÉΓòÉ

 /* Sample Script*/

 /* This script will allow you to log on to Compu-Plane once you change the
 strings stored in the variables called name and pass. Enter the sample.scr
 name for the script name of the Compu-Plane phone number, and change the name
 in the shell( ) function to the path and filename of this file.*/

 Call RxFuncadd "init_dll","RxPmcomm","init_dll"

 /* This function registers the init_dll function with REXX. The init_dll
 function will register the rest of the functions in the rxpmcomm.dll. */

 Parse arg port portname screen_handle dde semaphore

 /*These are the values that Pmcomm passes on the command line to an external
 program. These values can then be used in different REXX functions along with
 the rxpmcomm.dll functions. Following is the description of each value: */

 /* port      = The handle of the open com port in Pmcomm */
 /* portname    = The name of the opened com port ie.. COM1*/
 /* screen_handle = Anything written to the handle will be printed */
           on the Pmcomm screen. */
 /* dde      = This must be passed to any file transfer function. It */
 /*         allows the rxpmcomm.dll function to communicate with */
 /*         Pmcomm. */
 /* semaphore   = This also must be passed to any file transfer */
 /*         function. It makes your REXX program wait until */
 /*         the transfer has been completed. */

 Call init_dll

 /* Required before any other rxpmcomm.dll functions are called. */

 /* Setup variables  */

 name = 'first;last'  /* where first is your first name and last is*/
 pass = 'password'   /* your last name and password is your password.*/
 cr  = '0d'x

 Call read_timeout '20000',port

 /* This sets the read timeout for 20 seconds. This is used in the Wait_for,
 Wait_fore, and the Get_ch functions. */

 Say 'Waiting for first name ...'

 /* This will be printed on the REXX screen. */

 Do Forever

 Call Wait_fore 'name','password','continue?','?->',port,screen_handle

 /* This call will echo all characters to the Pmcomm screen that come from the
 open com port. When one of the strings are matched the function will return
 the index of the matched string in the variable result. For example if it
 receives the string password then the result will be equal to 2. If the
 functions waits longer then the read timeout value then result will be equal
 to 0. */
 match = result
   Select
    When match=1 then
     Do
      Call Put_s name||cr,port
      Say 'Waiting for password ...'
     End
    When match=2 then Call Put_s pass||cr,port
    When match=3 then Call Put_s cr,port
    When match=4 then Exit
   Otherwise nop
   End
 End
 Say 'Script ended  -' date( ) time( )
 Exit


ΓòÉΓòÉΓòÉ 9.3.2. Internal Sample ΓòÉΓòÉΓòÉ

 An example script to log onto a Multi-Net Communications BBS could be:

          wait_for ("first name");
          puts ("john\n");
          wait_for("last name");
          puts("doe\n");
          wait_for("password");
          puts("password\n");
          sleep (1000);
          puts("\n");

 Scripts can be executed automatically when logging onto a BBS by specifying
 the script filename in the dialing directory for that phone number. You can
 execute a script from the  File menu at anytime.


ΓòÉΓòÉΓòÉ 10. Installing Pmcomm Host Mode ΓòÉΓòÉΓòÉ

To install Pmcomm's Host Mode, change to the Pmcomm directory and run the
host.exe program. The first prompt will ask you to enter the maximum baud rate
of your modem. At the next prompt you must enter the number of selection that
matches your modem the closest. If you are unsure of which selection to make,
choose the Hayes 2400 modem as your selection. Next, you must enter the path,
including drive, of where you wish to install the Host Mode. When prompted,
enter your first name, last name, and password. The install program
automatically creates a password file in the necessary format. If this is an
"open" system new users will be stored in this file automatically. If this is a
"closed" system only the people that are registered in this file will be able
to access the Host Mode. The six files that the install program creates is
HOSTPASS.FLE, HOSTDIR.FLE, HOSTHEAD.FLE, HOST.SCR, HOSTNEWU.FLE, and
HOSTHELP.FLE. The HOSTPASS.FLE file, is where all of the users' names,
passwords, securities, and last time on are stored. The HOSTDIR.FLE file, is a
list of the directoties that have been created for the host mode. The
HOSTHEAD.FLE file is the file that is displayed to users when they logon. The
HOST.SCRr file is the main executable script. The HOSTNEWU.FLE file is the file
that is displayed to new users. In order for a user to be able to receive help
from the menu, the HOSTHELP.FLE must contain the information that will be
displayed.


ΓòÉΓòÉΓòÉ 11. Pmcomm Host Mode ΓòÉΓòÉΓòÉ

 /* PMCOMM HOST MODE */

 /* This sets signals to call these routines when corresponding REXX errors
 occur. */
 Signal ON SYNTAX  NAME SYNTAX_ERROR
 Signal ON NOVALUE NAME SYNTAX_ERROR
 Signal ON HALT   NAME KILL_HOST_MODE


 /* These are the values that Pmcomm passes on the command line to an external
 program. These values can then be used in different REXX functions along with
 the rxpmcomm.dll functions. Following is the description of each value: */


 /* port    = The handle of the open com port in
         Pmcomm
 portname    = The name of the opened com port ie..
         COM1
 screen_handle = Anything written to the handle will be
         printed on the Pmcomm screen.
 dde      = This must be passed to any file
         transfer function. It allows the
         rxpmcomm.dll function to communicate
         with Pmcomm.
 semaphore   = This also must be passed to any file
         transfer function. It makes your REXX
         program wait until the transfer has
         been completed. */


 Parse arg port portname screen_handle dde semaphore
 Parse source . . fn .


 /* Required before any other rxpmcomm.dll functions are called. */
 Call RxFuncadd "init_dll","RxPmcomm","init_dll"
 Call init_dll


 Expose_list = 'cr crlf bs esc port screen_handle
         connection  dde  priv' ,
        'dir_line. dir_name. dir_desc. fname
         lname  default_dir' ,
        'protocol last_login  total_logins
         audit_file temp_file' ,
        'pass_file pword semaphore upload_dir
         cmd_name. cmd_desc.',
        'num_of_cmds help_file'


 Call Clear_buffer
 Call Drop_DTR port
 Call Sleep "2000"
 Call Raise_DTR port


 Begin:
 Do Main = 1


 /* Setup variables */
 header_file  = "D:\PMCOMM\HOSTHEAD.FLE"
 pass_file   = "D:\PMCOMM\HOSTPASS.FLE"
 temp_file   = "D:\PMCOMM\HOST$$$$.FLE"
 audit_file  = "D:\PMCOMM\HOSTAUDT.FLE"
 help_file   = "D:\PMCOMM\HOSTHELP.FLE"
 newuser_file = "D:\PMCOMM\HOSTNEWU.FLE"
 dir_file   = "D:\PMCOMM\HOSTDIR.FLE"
 upload_dir  = "D:\PMCOMM\UPLOAD"


 /* The S0=1 must be included in the initialization string so the modem will
 answer the phone. */
 modem_string = "AT &C1&D2 S0=1 X4"


 /* If the system is designated as "OPEN", new users will be able to logon. If
 the system is designated as "CLOSED" only users listed in the hostpass.fle
 file will be allowed to logon. */
 system    = "OPEN"


 /* If connection is designated as "DIRECT", no modem commands will be sent. */
 connection  = "MODEM"


 /* If baud is designated as "AUTO", the Host Mode will match the incoming baud
 rate. If a baud rate is listed, the Host Mode will maintain that baud rate to
 the modem. */
 Baud     = "19200"


 max_attempts = 3
 bs  = '08'x
 cr  = '0d'x
 esc  = '1b'x
 crlf = '0d0a'x


 Parse value Directory() with orgdir


 Call read_timeout "5000",port


 /* This section intializes the modem. */
 If connection = 'MODEM' then
  Do
    Do Forever
     Call Put_s 'ATZ'||cr,port
     Call wait_for "OK",port
     Call Sleep "2000"
     Call Put_s modem_string||cr,port
     Call wait_for "OK",port
     If result = 1 then leave
   End
 End


 /* This section checks for valid paths, and changes to the default directory.
 */
 If system = 'CLOSED' then
   Do
    Parse value state_file(pass_file) with rc
    If rc = '' then
     Do
      Call Put_s 'Password file missing' crlf,screen_handle
      Call Put_s 'The password file must exist for
      CLOSED system operation  ...'
      crlf,screen_handle
      Signal Kill_Host_mode
     End
   End


 Parse value state_file(dir_file) with rc
 If rc = '' then
   Do
    Call Put_s 'Directory file missing ...'
    crlf,screen_handle
    Signal Kill_Host_mode
   End
 i=0
 Do until lines(dir_file) = 0
   Parse value linein(dir_file) with temp_line
   If substr(temp_line,1,1) = '*' then iterate
   i=i+1
   Parse var temp_line dir_line.i
   Parse var dir_line.i dir_name.i dir_desc.i
   tempname = pos("\",dir_name.i)
   If tempname = 0 then dir_name.i = dir_name.i||'\'
   dir_desc.i = space(dir_desc.i)
   dir_name.i = translate(dir_name.i)
 End
 dir_line.0 = i
 Parse value stream(dir_file,"c","close") with rc


 Parse value Directory(dir_name.1) with default_dir
 If default_dir \= '' then
   Do
    Call Clear
    Call Put_s 'Default directory changed to'
    default_dir crlf,screen_handle
   End
   Else do
    Call Clear
    Call Put_s 'Default directory' default_dir 'not
    found ...' crlf,screen_handle
    Signal Kill_Host_mode
   End


 If upload_dir \= '' then Call Set_Download_Path upload_dir,dde


 /* Pmcomm Host Mode is now waiting for a connect message from the com port. */
 Connection_Pending:
 Call Put_s 'PMCOMM now running in HOST mode' crlf crlf,screen_handle
 Call Put_s 'Waiting for connection ...'
 crlf,screen_handle
 Call read_timeout "60000",port
 If connection = 'MODEM' then
  Do
   If baud = "AUTO" then
   Do
     Do Forever
      Call Wait_fore '1200','2400','4800','9600',port,screen_handle
      match = result
      Select
         When match = 0 then iterate
         When match = 1 then Call Setcom
         "1200","N","8","1",port
         When match = 2 then Call Setcom
         "2400","N","8","1",port
         When match = 3 then Call Setcom
         "4800","N","8","1",port
         When match = 4 then Call Setcom
         "9600","N","8","1",port
         Otherwise nop
      End
     Leave
     End
   End
   Else Do
     Call Setcom baud,"N","8","1",port
     Do Forever
      Call Wait_fore 'CONNECT',port,screen_handle
      If result = 1 then leave
     End
    End
 End


 Call Sleep "5000"
 /* The file HOSTHEAD.FLE is displayed to the user at this point. */
 Parse value Header(header_file) with rc
 invalid_login_count = 0


 /* This section is where the Host Mode receives the users name. */
 Sign_on:
 Do Forever
 fname = '' ; lname = '' ; pword = '' ; nuser = 'N'
 Parse value read_with_echo("Your first name?->") with
 rc fname .
 If rc \=0 then leave main
 If fname = '' then iterate
 Parse value read_with_echo(" Your last name?->") with
 rc lname .
 If rc \=0 then leave main
 If lname = '' then iterate


 /* This section checks the password file (HOSTPASS.FLE) to see if the user is
 listed. */
 Parse value read_password_file(pass_file) with rc priv
 protocol r_pass total_logins last_login
 If rc \= 0  then
  Do
   If system = 'OPEN' then
    Do
      Parse value read_with_echo(fname lname||",
      correct - [Y]es or [Return], [N]o?->")
      with rc okname .
      If rc \=0 then leave main
      If okname = 'N' then iterate
      Parse value Header(newuser_file) with rc
      Parse value read_with_echo("Would you like to
      register - [Y]es or [Return], [N]o?->")
      with rc nuser .
      If rc \=0 then leave main
      If nuser = 'N' then leave main
      nuser = 'Y'
      r_pass = ''
    End
    Else Do
      Call Put_s crlf||"Closed System, no access allowed" crlf,port
      Call Put_s crlf||"Closed System, no access
      allowed" crlf,screen_handle
      Leave main
    End
  End


 /* This section gets a password from a user and checks to see if the password
 matches the one in the password file (HOSTPASS.FLE). */
 Parse value read_without_echo("Enter your password
 (.'s will echo)->") with rc pword .
 If pword = '' then iterate
 If rc \=0 then leave main
 If r_pass = '' then r_pass = pword
 If nuser  = 'Y' then Call Add_password_file(pass_file)
 If pword \== r_pass then
  Do
   If invalid_login_count = max_attempts then leave
   main
   Call Put_s crlf||"Invalid Login Attempt - Try again" crlf,port
   Call Put_s crlf||"Invalid Login Attempt - Try
   again" crlf,screen_handle
   invalid_login_count = invalid_login_count + 1
   Iterate
 End
 Leave
 End


 /* This section loads the login message into the audit file (HOSTAUDT.FLE). */
 login_msg = "Login by" fname "at" time('C') 'on'
 date('L') ', last login was on' last_login
 Call Put_s crlf crlf||login_msg crlf,port
 Call Put_s crlf crlf||Login_msg crlf,screen_handle
 Call Audit(date('L') time('C') "- Login by" fname
 lname)
 rc = time("R")


 /* This section displays the menu and receives a menu selection from the user.
 */
 Menu_loop:


 Do Forever
 Call Put_s crlf crlf, port
 Call Put_s crlf crlf, screen_handle


 Call Build_Menu


 cmdline = ''
 heading = crlf crlf crlf center("--- Main Options Menu
 ---",79)
 Call Put_s heading crlf crlf,port
 Call Put_s heading crlf,screen_handle
 Do i = 1  by 2 to num_of_cmds
   j=i+1
   line = overlay(cmd_name.j cmd_desc.j,cmd_name.i
   cmd_desc.i,40)
   Call Put_s line crlf,port
   Call Put_s line crlf,screen_handle
   cmdline = cmdline substr(cmd_name.i,2,1) substr
   (cmd_name.j,2,1)
 End
 cmdline = space(cmdline,1,',')
 Parse value read_with_echo("Enter choice"
 cmdline||"?->") with rc pick .
 If rc \= 0 then leave main
 If pick = '' then iterate


 Select
    When pick = "C" then Parse value Change_Dir()
    with rc
    When pick = "D" then Parse value
    File_Transfer("DOWNLOAD") with rc
    When pick = "F" then Parse value List_Files()
    with rc
    When pick = "G" then Parse value Good_Bye()
    with rc
    When pick = "H" then Parse value Help_Text()
    with rc
    When pick = "I" then Parse value
    User_Information() with rc
    When pick = "L" then Parse value
    List_Directories() with rc
    When pick = "S" then Parse value Shell_OS2()
    with rc
    When pick = "T" then Signal Kill_Host_Mode
    When pick = "U" then Parse value
    File_Transfer("UPLOAD") with rc
    Otherwise iterate
 End
 If rc \=0 then leave main
 End


 /* This section hangs-up the phone and recycles Pmcomm Host Mode for the next
 caller. */
 Call Clear_buffer
 Call Drop_DTR port
 Call Sleep "2000"
 Call Raise_DTR port
 Call Put_s crlf||'PMComm Host Mode Recycling' crlf,screen_handle


 End


 Call Clear_buffer
 Call Drop_DTR port
 Call Sleep "2000"
 Call Raise_DTR port
 Call Put_s crlf||'PMComm Host Mode Recycling'
 crlf,screen_handle
 Signal Begin


 /* This clears both the local Pmcomm screen and the remote screen. */
 Clear: Procedure expose (expose_list)
 Call put_s "1b5b324a"x,screen_handle
 Call put_s "1b5b324a"x,screen_handle
 Call put_s "1b5b324a"x,port
 Call put_s "1b5b324a"x,port
 Return


 /* This routine will be called when an error is detected. */
 syntax_error:
 fp = filespec("path",fn)
 fd = filespec("drive",fn)
 errormsg='REXX error' rc 'in line' sigl':'
 errortext(rc)
 errorfile = fd||fp||"SCRIPT.ERR"
 rc = lineout(errorfile,date() time() fn '-' errormsg)
 rc = lineout(errorfile,date() time() fn '-'
 sourceline(sigl))
 Exit


 /* This section performs both the send and receive file transfers. */
 File_Transfer: Procedure expose (expose_list)
 Parse arg direction


 Do i=1 until i=dir_line.0
   If default_dir = dir_name.i then
    Do
      Call Put_s crlf||'Current directory is ['||i||'] -' dir_desc.i crlf,port
      Call Put_s crlf||'Current directory is
      ['||i||'] -' dir_desc.i crlf,screen_handle
      i = 0
      Leave
    End
 End
 If i \=0 then
   Do
    Call Put_s crlf||"Current directory is "
    default_dir crlf,port
    Call Put_s crlf||"Current directory is "
    default_dir crlf,screen_handle
   End


 If protocol \= 'NONE' then
   Do
    Call Put_s "Current file transfer protocol is"
    protocol crlf,port
    Call Put_s "Current file transfer protocol is"
    protocol crlf,screen_handle
    t_protocol = protocol
   End
 Do Forever
  Parse value read_with_echo("Enter file name or Tap
  [Return] to abort?->") with rc dfn .
  If rc \=0 then return rc
  Parse var dfn fn '.' ft
  If dfn = '' then return 0
  If ft = '' then
    Do
     Call Put_s crlf||"Invalid filename ..."
     crlf,port
     Call Put_s crlf||"Invalid filename ..."
     crlf,screen_handle
     Iterate
    End
  If direction = "DOWNLOAD" then
    Do
     tempname = reverse(default_dir)
     If pos("\",tempname) = 1 then file_name =
     default_dir||dfn
     else file_name = default_dir||"\"||dfn
     Parse value State_file(file_name) with rc
     If rc = '' then
      Do
       Call Put_s crlf||"File not found ..."
       crlf,port
       Call Put_s crlf||"File not found ..."
       crlf,screen_handle
       Iterate
      End
    End
  If direction = "UPLOAD" then
    Do
     tempname = reverse(default_dir)
     If pos("\",tempname) = 1 then file_name =
     default_dir||dfn
     else file_name = default_dir||"\"||dfn
     Parse value State_file(file_name) with rc
     If rc = file_name then
      Do
       Call Put_s crlf||"File already exists
       ..." crlf,port
       Call Put_s crlf||"File already exists
       ..." crlf,screen_handle
       Iterate
      End
    End
 Leave
 End


 Parse value read_with_echo("Logoff after file transfer
 - [N]o or [Return], [Y]?->") with rc auto .
 If rc \=0 then return rc
 If protocol = 'NONE' then
   Do
    Parse value Set_protocol('NONE') with rc
    t_protocol = protocol
    protocol = 'NONE'
   End

 Select
   When t_protocol = "XMODEM" & direction =
     "DOWNLOAD"  then
      do
       Call Put_s crlf||"Ready to send file ..."
       crlf,port
       Call Put_s crlf||"Ready to send file ..."
       crlf,screen_handle
       Call xmodem_send file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "XMODEM" & direction = "UPLOAD"
   then
      do
       Call Put_s crlf||"Ready to receive file
       ..." crlf,port
       Call Put_s crlf||"Ready to receive file
       ..." crlf,screen_handle
       Call xmodem_receive file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "XMODEM-1K" & direction =
   "DOWNLOAD"  then
      do
       Call Put_s crlf||"Ready to send file ..."
       crlf,port
       Call Put_s crlf||"Ready to send file ..."
       crlf,screen_handle
       Call xmodem_1k_send file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "XMODEM-1K" & direction =
     "UPLOAD"  then
      do
       Call Put_s crlf||"Ready to receive file
       ..." crlf,port
       Call Put_s crlf||"Ready to receive file
       ..." crlf,screen_handle
       Call xmodem_1k_receive file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "YMODEM" & direction =
   "DOWNLOAD"  then
      do
       Call Put_s crlf||"Ready to send file ..."
       crlf,port
       Call Put_s crlf||"Ready to send file ..."
       crlf,screen_handle
       Call ymodem_send file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "YMODEM" & direction =
   "UPLOAD" then
      do
       Call Put_s crlf||"Ready to receive file
       ..." crlf,port
       Call Put_s crlf||"Ready to receive file
       ..." crlf,screen_handle
       Call ymodem_receive dde,semaphore
       ft_rc = result
      end
   When t_protocol = "YMODEMG" & direction =
   "DOWNLOAD"  then
      do
       Call Put_s crlf||"Ready to send file ..."
       crlf,port
       Call Put_s crlf||"Ready to send file ..."
       crlf,screen_handle
       Call ymodemg_send file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "YMODEMG" & direction =
   "UPLOAD"  then
      do
       Call Put_s crlf||"Ready to receive file
       ..." crlf,port
       Call Put_s crlf||"Ready to receive file
       ..." crlf,screen_handle
       Call ymodemg_receive dde,semaphore
       ft_rc = result
      end
   When t_protocol = "ZMODEM" & direction =
   "DOWNLOAD"  then
      do
       Call Put_s crlf||"Ready to send file ..."
       crlf,port
       Call Put_s crlf||"Ready to send file ..."
       crlf,screen_handle
       Call zmodem_send file_name,dde,semaphore
       ft_rc = result
      end
   When t_protocol = "ZMODEM" & direction =
   "UPLOAD"  then
      do
       Call Put_s crlf||"Ready to receive file
       ..." crlf,port
       Call Put_s crlf||"Ready to receive file
       ..." crlf,screen_handle
       Call zmodem_receive dde,semaphore
       ft_rc = result
      end
   Otherwise return 0
   End


 If ft_rc = 1 then
   Do
    Call Sleep "3000"
    Call Put_s crlf||'File transfer complete'
    crlf,port
    Call Put_s crlf||'File transfer complete'
    crlf,screen_handle
    If auto = "Y" then
     Do
      Parse value Good_bye() with rcode
      return rcode
     End
    return 0
   End
   Else do
    Call Sleep "3000"
    Call Put_s crlf||'File transfer aborted'
    crlf,port
    Call Put_s crlf||'File transfer aborted'
    crlf,screen_handle
    If auto = "Y" then
     Do
      Parse value Good_bye() with rcode
      return rcode
     End
    return 0
   End



 /* This section reads in characters from the remote computer and echoes it to
 the local Pmcomm screen as well as the remote computer. */
 Read_with_echo: Procedure expose (expose_list)
 Parse arg screen_output


 Call Clear_buffer
 Call Read_timeout '3000',port
 Call Put_s crlf||screen_output,port
 Call Put_s crlf||screen_output,screen_handle
 line = ' '
 j = 0
 time_out = 0


 Do Forever
 Parse value  Get_CH(port) with char_in
 If connection = 'MODEM' then
  Do
   Call DCD port
   If result = 0 then return 99
  End

 If char_in = "-1" then
   Do
    time_out = time_out+1
    If time_out = 60 then
     Do
       Call Put_s crlf crlf||"Session being
       cancelled due to inactivity" crlf,port
       Call Put_s crlf crlf||"Session being
       cancelled due to inactivity"
       crlf,screen_handle
       Parse value Good_bye() with rcode
       return rcode
     End
    Iterate
   End


 If char_in = cr then
   Do
    Call Put_s crlf,port
    Call Put_s crlf,screen_handle
    line = space(line)
    line = translate(line)
    return 0 line
   End


 If char_in = bs then
   Do
    If j > 0 then
     Do
      line = delstr(line,j,1)
      Call Put_s bs,port
      Call Put_s bs,screen_handle
      j=j-1
     End
   End
   Else Do
    line = line||char_in
    Call Put_s char_in,port
    Call Put_s char_in,screen_handle
    j=j+1
   End
 End


 /* Reads characters from the remote computer and echoes back dots to the the
 remote screen and characters to the local Pmcomm screen. */
 Read_without_Echo: Procedure expose (expose_list)
 Parse arg screen_output


 Call Clear_buffer
 Call Read_timeout '3000',port
 Call Put_s crlf||screen_output,port
 Call Put_s crlf||screen_output,screen_handle
 line = ''
 j=0
 time_out = 0


 Do Forever
 Parse value  Get_CH(port) with char_in
 If connection = 'MODEM' then
  Do
   Call DCD port
   If result = 0 then return 99
  End


 If char_in = "-1" then
   Do
    time_out = time_out+1
    If time_out = 60 then
     Do
       Call Put_s crlf crlf||"Session being
       cancelled due to inactivity" crlf,port
       Call Put_s crlf crlf||"Session being
       cancelled due to inactivity"
       crlf,screen_handle
       Parse value Good_bye() with rcode
       return rcode
     End
    Iterate
   End


 If char_in = cr then
   Do
    Call Put_s crlf,port
    Call Put_s crlf,screen_handle
    line = space(line)
    line = translate(line)
    return 0 line
   End


 If char_in = bs then
   Do
    If j > 0 then
     Do
      line = delstr(line,j,1)
      Call Put_s bs,port
      Call Put_s bs,screen_handle
      j=j-1
     End
   End
   Else Do
    line = line||char_in
    Call Put_s ".",port
    Call Put_s char_in,screen_handle
    j=j+1
   End
 End


 /* This procedure flushes  the com port receive buffer. */
 Clear_buffer: Procedure expose (expose_list)
 Call Read_timeout '0',port
 Do Forever
   Parse value Get_CH (port) with rc
   If rc = "-1" then return
 End
 Return


 /* This procedure displays a help file (HOSTHELP.FLE). */
 Help_text: Procedure expose (expose_list)
 Parse value Header(help_file) with rc
 If rc \=0 then
   Do
    Call put_s crlf||'Help file not available ...' crlf,port
    Call put_s crlf||'Help file not available ...'
    crlf,screen_handle
   End
 Return 0


 /* This reads the password file (HOSTPASS.FLE) until it gets a match or
 reaches the end of the file. */
 Read_password_file: Procedure expose (expose_list)
 Parse arg pass_file
 protocol = "NONE"
 r_fname = '' ; r_lname = '' ; r_pass = '' ;
 r_priv = ''
 r_protocol = protocol ; r_total_logins = '' ;
 r_last_login = ''
 Do until lines(pass_file) = 0
   Parse value linein(pass_file) with pass_line
   If substr(pass_line,1,1) = '*' then iterate
   Parse upper var pass_line r_fname r_lname r_pass
   r_priv r_protocol r_total_logins r_last_login
   If fname \== r_fname | lname \== r_lname then
   iterate
   If r_protocol = '' then r_protocol = protocol
   If r_total_logins = '' then r_total_logins = 0
   r_total_logins = r_total_logins + 1
   If r_last_login = '' then r_last_login = 'UNKNOWN'
   Parse value stream(pass_file,"c","close") with rc
   return 0 r_priv r_protocol r_pass r_total_logins
   r_last_login
 End
 Parse value stream(pass_file,"c","close") with rc
 Return 99 1 protocol 'DUMMY' 1 date('L')


 /* This procedure updates the current users information in the password file
 (HOSTPASS.FLE). */
 Update_Password_file: Procedure expose (expose_list)
 Parse arg pass_file temp_file
 Do until lines(pass_file) = 0
   Parse value linein(pass_file) with pass_line
   Parse upper var pass_line r_fname r_lname r_pass
   r_priv .
   If fname \== r_fname | lname \== r_lname then
    Do
     Parse value lineout(temp_file,pass_line)
     with rc
    End
    Else Do
     last_login = Date('L')
     pass_line = r_fname r_lname pword r_priv
     protocol total_logins last_login
     Parse value lineout(temp_file,pass_line)
     with rc
    End
 End
 Parse value stream(pass_file,"c","close") with rc
 Parse value stream(temp_file,"c","close") with rc
 Address CMD "ERASE" pass_file
 pass_name = filespec("name",pass_file)
 Address CMD "RENAME" temp_file pass_name
 Return 0


 /* This procedure adds a new user to the password file (HOSTPASS.FLE). */
 Add_Password_file: Procedure expose (expose_list)
 Parse arg pass_file
 pass_line = fname lname pword 1 protocol 1 date('L')
 Parse value lineout(pass_file,pass_line) with rc
 Parse value stream(pass_file,"c","close") with rc
 Return 0


 /* This displays a file both locally and remotely. */
 Header: Procedure expose (expose_list)
 Parse arg text_file
 Parse value state_file(text_file) with rc
 If rc = '' then return 99
 Call put_s crlf,port
 Call put_s crlf,screen_handle
 Do until lines(text_file)  = 0
   Parse value linein(text_file) with head_line
   If substr(head_line,1,1) = '*' then iterate
   Call put_s head_line crlf,port
   Call put_s head_line crlf,screen_handle
 End
 Parse value stream(text_file,"c","close") with rc
 Return 0


 /* This procedure adds the audit information to the end of the audit file
 (HOSTAUDT.FLE). */
 Audit: Procedure expose (expose_list)
 Parse arg audit_record
 Parse value lineout(audit_file,audit_record) with rc
 Return rc


ΓòÉΓòÉΓòÉ 12. Pmcomm Host Mode (cont.) ΓòÉΓòÉΓòÉ

 /* This diplays a menu. The menu that is displayed depends upon the user's
 security level. */
 Build_Menu: Procedure expose (expose_list)
 command_tbl.  = ''
 command_tbl.1  = "[C]hange Active Directory (or drive)
 ; 5"
 command_tbl.2  = "[D]ownload A File ; 1"
 command_tbl.3  = "[F]iles (List current directory)
 ; 1"
 command_tbl.4  = "[G]oodbye (Disconnect) ; 0"
 command_tbl.5  = "[H]elp (Main command help) ; 0"
 command_tbl.6  = "[I]nformation (User defaults) ; 0"
 command_tbl.7  = "[L]ist File Directories ; 0"
 command_tbl.8  = "[S]hell To OS/2 ; 9"
 command_tbl.9  = "[T]erminate Host mode ; 9"
 command_tbl.10 = "[U]pload A File ; 1"


 cmd_desc. = ''
 cmd_name. = ''
 j = 0
 Do i = 1 until command_tbl.i = ''
   Parse var command_tbl.i tbl_command tbl_desc ';'
   tbl_priv
   If tbl_priv > priv then iterate
   j = j + 1
   cmd_name.j = tbl_command
   cmd_desc.j = tbl_desc
 End
 num_of_cmds = j
 Return


 /* This procedure allows a user to choose a directory and the list the files
 within that directory. The directories that can be listed, along with their
 corresponding descriptions, are stored in the HOSTDIR.FLE file. If a user's
 security is less than 5, the disk directory names will not be displayed. */
 List_files: Procedure expose (expose_list)
 Parse value read_with_echo("Enter wildcard for files
 or Tap [Return] for ALL files?->") with rc wildcard .
 If rc \=0 then return rc


 Do i=1 until i=dir_line.0
   If default_dir = dir_name.i then
    Do
      Call Put_s crlf||'Directory ['||i||'] -' dir_desc.i crlf,port
      Call Put_s crlf||'Directory ['||i||'] -'
      dir_desc.i crlf,screen_handle
      Leave
    End
 End


 queue = 'PMCOMMQ'
 rc = rxqueue('delete',queue)
 rc = rxqueue('create',queue)
 rc = rxqueue('set',queue)
 Address CMD 'DIR' wildcard '/N 2>NUL | RXQUEUE' queue
 If queued() <= 5 then
   Do
    Call put_s crlf||'No files Found or Directory
    Empty' crlf,port
    Call put_s crlf||'No Files Found or Directory
    Empty' crlf,screen_handle
    rc = rxqueue('delete',queue)
    Return 0
   End
 Do 4
   Parse pull .
 End
 Do i=1 until queued()-1 <= 0
   Parse pull d_date d_time d_bytes . d_file
   If priv < 5 & datatype(d_bytes,'N') = 0
   then iterate
   outline = left(d_file,13) right(d_bytes,8)
   right(d_date,10)
   Call Put_s outline crlf,port
   Call Put_s outline crlf,screen_handle
   x = i // 21
   If x = 0 then
    Do
     Parse value read_with_echo ("More - Tap
     [Return] to continue or Q to abort?->")
     with rc more .
     If rc \=0 then return rc
     If more \= '' then leave
    End
 End
 rc = rxqueue('delete',queue)
 Return 0


 /* This section displays the available directories to the user. */
 List_Directories: Procedure expose (expose_list)
 Do forever
 Parse value read_with_echo ("List -
 [1.."||dir_line.0||"], [L]ist, [Return] to abort?->")
 with rc func .
 If rc \=0 then return rc
 If func = '' then return 0
 If func = 'L' then
  Do
   Do i=1 until i=dir_line.0
     Call Put_s '['||i||']' dir_desc.i crlf,port
     Call Put_s '['||i||']' dir_desc.i
     crlf,screen_handle
     x = i // 21
     If x = 0 then
      Do
       Parse value read_with_echo("More - Tap
       [Return] to continue or Tap Any Key to
       abort?->") with rc more .
       If rc \=0 then return rc
       If more \= '' then leave
      End
   End
 Iterate
 End


 If datatype(func,'N')=1 then
   Do
    If func > 0 & func <= dir_line.0 then
     Do
       Parse value directory(dir_name.func) with
       default_dir
       Parse value List_Files() with rc
     End
   End
 Iterate
 End
 Return 0


 /* This procedure changes the current directory. */
 Change_dir: Procedure expose (expose_list)
 Parse value directory() with default_dir


 Call Put_s crlf||"Current directory is " default_dir crlf,port
 Call Put_s crlf||"Current directory is " default_dir
 crlf,screen_handle
 Do Forever
  Parse value read_with_echo("Enter new directory name
  or Tap [Return] to abort?->") with rc newdir .
  If rc \=0 then return rc
  If newdir = '' then return 0
  Parse value directory(newdir) with tempdir
  If tempdir  \= '' then
    Do
     Call Put_s 'Default directory changed to'
     newdir crlf,port
     Call Put_s 'Default directory changed to'
     newdir crlf,screen_handle
     default_dir = newdir
     upload_dir  = newdir
     Call Set_Download_Path newdir,dde
    End
     Else do
     Call Clear
     Call Put_s crlf||'Directory' newdir 'not found
     ...' crlf,port
     Call Put_s crlf||'Directory' newdir 'not found
     ...' crlf,screen_handle
     Iterate
    End
  Return 0
 End


 /* This procedure sets the user's default file transfer protocol. */
 Set_protocol: Procedure expose (expose_list)
 protocol_sel = "[X]modem [C]rc-Xmodem-1K
 [B]atch-Ymodem [Y]modem-G [Z]modem [N]one"
 Parse arg call_type
 If call_type = '' then
   Do
    Call Put_s crlf||"Current file transfer protocol is" protocol crlf,port
    Call Put_s crlf||"Current file transfer protocol
    is" protocol crlf,screen_handle
   End
   Else Do
    Call Put_s crlf crlf,port
    Call Put_s crlf,screen_handle
   End


 cmdline = ''
 Do i = 1 to words(protocol_sel)
   Call Put_s word(protocol_sel,i) crlf ,port
   Call Put_s word(protocol_sel,i) crlf ,screen_handle
   cmdline = cmdline substr(word(protocol_sel,i),2,1)
 End
 cmdline = space(cmdline,1,',')


 Do Forever
  Parse value read_with_echo("Enter choice " cmdline
  "or Tap [Return] to abort?->") with rc pick .
  If rc \=0 then return rc
  If pick = '' then return 0
  Select
     When pick = "X" then protocol = "XMODEM"
     When pick = "C" then protocol = "XMODEM-1K"
     When pick = "B" then protocol = "YMODEM"
     When pick = "Y" then protocol = "YMODEMG"
     When pick = "Z" then protocol = "ZMODEM"
     When pick = "N" then protocol = "NONE"
     Otherwise iterate
  End
  Leave
 End
 Return 0


 /* This procedure allows a user to change their password. */
 Set_password: Procedure expose (expose_list)
 Parse value read_with_echo("Enter new password or Tap
 [Return] to abort?->") with rc tword .
 If rc \=0 then return rc
 If tword = '' then return 0
 pword = tword
 Call Update_password_file(pass_file temp_file)
 Call Put_s crlf||'Password changed ...' crlf crlf,port
 Call Put_s crlf||'Password changed ...' crlf
 crlf,screen_handle
 Return 0


 /* This procedure allows the remote user to shell to the OS\2 prompt. To
 return to the Host Mode the user needs to type in exit. */
 Shell_OS2: Procedure expose (expose_list)
 Call OS2_Shell port,port
 Return 0


 /* This procedure allows a user to list their current information and to
 change their password and their transfer protocol. */
 User_Information: Procedure expose (expose_list)
 Call Put_s 'Information - Self User Alterations' crlf crlf,port
 Call Put_s 'Information - Self User Alterations' crlf
 crlf,screen_handle
 Call Put_s "- First name ... :" fname crlf,port
 Call Put_s "- First name ... :" fname
 crlf,screen_handle
 Call Put_s "- Last name .... :" lname crlf,port
 Call Put_s "- Last name .... :" lname
 crlf,screen_handle
 Call Put_s "- Password ..... :" pword crlf,port
 Call Put_s "- Password ..... :" pword
 crlf,screen_handle
 Call Put_s "- Trans Protocol :" protocol crlf,port
 Call Put_s "- Trans Protocol :" protocol
 crlf,screen_handle
 Call Put_s "- Privilage .... :" priv crlf,port
 Call Put_s "- Privilage .... :" priv
 crlf,screen_handle
 Call Put_s "- Directory .... :" default_dir crlf
 crlf,port
 Call Put_s "- Directory .... :" default_dir crlf
 crlf,screen_handle
 Call Put_s "- Last call was on" last_login crlf,port
 Call Put_s "- Last call was on" last_login
 crlf,screen_handle
 Call Put_s "- Total number of calls todate is"
 total_logins crlf crlf,port
 Call Put_s "- Total number of calls todate is"
 total_logins crlf crlf,screen_handle
 Call Put_s "- Current date is" date() ", current time
 is" time('C') crlf,port
 Call Put_s "- Current date is" date() ", current time
 is" time('C') crlf,screen_handle
 Call Put_s "- Elapsed time this call is" time("E")%60
 "minute(s)" crlf,port
 Call Put_s "- Elapsed time this call is" time("E")%60
 "minute(s)" crlf,screen_handle


 Parse value read_with_echo("User Alterations -
 [P]assword, [T]rans, [Return] to quit?->") with rc
 attr
 If rc \=0 then return rc
 Select
  When attr = 'T' then Parse value
  Set_protocol('NONE') with rc
  When attr = 'P' then Parse value Set_password()
  with rc
  Otherwise return 0
 End
 Return rc


 /* This procedure checks to see if a file exists. */
 State_file: Procedure
 Parse arg file_name
 If file_name = '' then return file_name
 return(stream(file_name,'c','query exists'))


 /* This procedure logs the current user off. */
 Good_Bye: Procedure expose (expose_list)
 If fname = '' | lname = '' then return 99
 Call Put_s crlf||time("E")%60 "minute(s) logged this time." crlf,port
 Call Put_s crlf||time("E")%60 "minute(s) logged
 this time." crlf,screen_handle
 Call Put_s "Tap [Enter] to LogOff now." crlf,port
 Call Put_s "Tap [Enter] to LogOff now."
 crlf,screen_handle
 Call Put_s "Tap [Esc] to abort LogOff." crlf crlf,port
 Call Put_s "Tap [Esc] to abort LogOff." crlf
 crlf,screen_handle
 Call Clear_Buffer
 Call Read_timeout "1000",port
 Do i=9 by -1 until i = 0
  Call Put_s "Hanging up in :" i "seconds" cr,port
  Call Put_s "Hanging up in :" i "seconds"
  cr,screen_handle
  Parse value Get_CH(port) with char_in
  If char_in = "-1" then iterate
  If char_in = esc then return 0
  Leave
 End
 Call Put_s crlf||"Loggoff for" fname lname "complete"
 crlf,port
 Call Put_s crlf||"Loggoff for" fname lname "complete"
 crlf ,screen_handle
 Call Audit(date() time('C') "- Logoff by" fname lname)
 Call Update_Password_file(pass_file temp_file)
 Return 99


 /* Terminates Host Mode and hangs up the phone. */
 Kill_host_mode:
 Parse value directory(orgdir) with rc
 Call Put_s crlf||"Directory reset to" orgdir crlf,screen_handle
 Call Put_s "PMComm Host Mode Terminating ..."
 crlf,port
 Call Put_s "PMComm Host Mode Terminating ..."
 crlf,screen_handle
 If connection = 'MODEM' then
  Do
   Call Clear_buffer
   Call Drop_DTR port
   Call Sleep "2000"
   Call Raise_DTR port
   Call Put_s 'ATZ'||cr,port
   Call wait_for "OK",port
   Call Sleep "2000"
  End
 Exit


ΓòÉΓòÉΓòÉ 13. How To... ΓòÉΓòÉΓòÉ

This section gives you examples of how to set Pmcomm up to do different things.


ΓòÉΓòÉΓòÉ 13.1. How to Use Pmcomm with a modem pool. ΓòÉΓòÉΓòÉ

Because Pmcomm does not use ACDI, and will allow you to enter any valid 12
character name for a device, it will work with a shared serial port modem pool.
This allows you to have modems on a server that users can access from their
workstations. This can save a considerable about of money.

The following is a flash from IBMLink on how to setup a modem pool using Pmcomm
and Lan Server.

The rest of this scenario concerns the OS/2 LAN Server definitions. When LAN
Server definitions and actions are complete, defined users at any OS/2
Requestor can run the program from the OS/2 Public Applications Window. The
serial port and modem at the LAN Server will be shared. To begin, logon as an
administrator in the proper domain. Then follow instructions for the following:


   a.  Defining the shared modem

   b.  Defining the shared program files

   c.  Defining the program as a public OS/2 application

   d.  Defining the working directory

   e.  Sharing the modem and the program

   f.  Assigning the modem and the program to the users as they log on.

 DEFINING THE SHARED MODEM

   Follow this sequence:
   DEFINITION
   ALIASES
   SERIAL DEVICES
   --NEW-- (With cursor on --NEW--, press space bar to
     choose, press enter or click on ACTION)
   CREATE(Create a serial device alias - I used an
     alias of MODEM1, chose COM1 from the device
     pool using F4 for the list, and choose to
     share the port at server startup)


 *---------------------------------------------------------------------*

            Create Alias - Serial Device

   Complete the panel; then Enter.

   Alias . . . . . . . . . . . . . . . MODEM1
   Description . . . . . . . . . . . . Shared modem
   Server Name . . . . . . . . . . . . Chosen with the F4 key
   Server Device Pool. . . . . . . . . COM1
   Priority. . . . . . . . . . . . . . 5 (chosen arbitrarily)
   Maximum number of users . . . . . . (left blank)
   When shared . . . . . . . . . > At server startup

 |---------------------------------------------------------------------|

   ENTER  Escape=Cancel  F1=Help  F4=List

 *---------------------------------------------------------------------*

 DEFINING THE SHARED PROGRAM FILES

   Follow this sequence:
   DEFINITION
   ALIASES
   FILES
   --NEW-- (With cursor on --NEW--, press space bar to
     choose, press enter or click on ACTION)
   CREATE (Create the file alias)

  *---------------------------------------------------------------------*

             Create Alias - Files

    Complete the panel; then Enter.

    Alias . . . . . . . . . . . . . . . PMCOMM
    Description . . . . . . . . . . . . Program to access shared modem
    Server Name . . . . . . . . . . . . Chosen with the F4 key
    Server Path to Directory. . . . . . :OS2:ASYNC:PMCOMM

    Maximum number of users . . . . . . (left blank)
    When shared . . . . . . . . . > At server startup

  |---------------------------------------------------------------------|

    ENTER  Escape=Cancel  F1=Help  F4=List

  *---------------------------------------------------------------------*

 DEFINING THE PROGRAM AS A PUBLIC OS/2 APPLICATION

   Follow this sequence:
   DEFINITION
   APPLICATION
   PUBLIC OS/2 APPLICATION
   --NEW-- (With cursor on --NEW--, press space bar to
     choose, press enter or click on ACTION)
   CREATE

  *---------------------------------------------------------------------*

            Create OS/2 Application Details

   Complete the panel; then Enter.

   Application ID. . . . . . . . . . . PMCOMMX
   Description . . . . . . . . . . . . Shared modem communications
   Program location. . . . . . . . . . Remote
   Drive or alias. . . . . . . . . . . PMCOMM
   Remaining path to program . . . . . :
   Command line. . . . . . . . . . . . PMCOMM.EXE
   Prompt used for parameters? . . . . NO
   Program type. . . . . . . . . . . . OS/2 PM

  |---------------------------------------------------------------------|

   ENTER  Escape=Cancel  F1=Help  F4=List

  *---------------------------------------------------------------------*

 DEFINING THE WORKING DIRECTORY

 PMCOMM has support files that should reside in the working directory at
 the server. If this directory is not assigned, each user must have these
 files on their own disk.

   Follow this sequence:
   DEFINITION
   APPLICATION
   PUBLIC OS/2 APPLICATION
   --PMCOMMX-- (With cursor on --PMCOMMX--, press space
     bar to choose, press enter or click on
     ACTION)
   WORKING DIRECTORY

  *---------------------------------------------------------------------*

              Working Directory

    Complete the panel; then Enter.

    Working Directory . . . . . . . . . REMOTE
    Drive or alias. . . . . . . . . . . PMCOMM
    Remaining path to program . . . . . :
    Assigned Drive. . . . . . . . . . . P (chosen arbitrarily)

  |---------------------------------------------------------------------|

    ENTER  Escape=Cancel  F1=Help  F4=List

  *---------------------------------------------------------------------*

 SHARING THE PROGRAM AND THE MODEM

   Follow this sequence:
   ACTION
   RESOURCE SHARING
   --PMCOMM-- (With cursor on --PMCOMM--, press spacebar
     to choose, press enter or click on ACTION)
   START SHARING
   --MODEM1-- (With cursor on --MODEM1--, press spacebar
     to choose, press enter or click on ACTION)
   START SHARING

 ASSIGNING RESOURCES TO USERS AS THEY LOG ON

   Follow this sequence for each user, to assign MODEM1 as a user
   logs on:
   DEFINITION
   USERS
   -- User -- (With cursor on the user name, press F10)
   LOGON
   SERIAL DEVICE ASSIGNMENTS
   Assign MODEM1 to a COM port

   Follow this sequence for each user, to copy the program to the user's
   START PROGRAMS window:
   DEFINITION
   USERS
   -- User -- (With cursor on the user name, press spacebar
     to choose, press enter or click on ACTION)
   PROGRAM STARTER
   --PMCOMMX-- (With cursor on --PMCOMMX-- press the
     spacebar to choose)

 There maybe some problems when using Ymodem-g when Pmcomm is used with a modem
 pool. The reason for this is that hardware flow control is not available
 across a LAN, and XON/XOFF won't work with Ymodem-g. The Pmcomm Host mode will
 work, but it will not be able to tell if someone dropped carrier. If the user
 hangs up normally then the host mode will work with very few changes.


ΓòÉΓòÉΓòÉ 13.2. How to Use Pmcomm with IBMLink. ΓòÉΓòÉΓòÉ

If you have access to IBMLink (ask an IBM SE) you can use Pmcomm to call. The
first thing you will need is a phone number that will work with Pmcomm. This
type of number is call, an SS/EFS number. This stands for, Start Stop Enhanced
Full Screen. It allows access to IBMLink through a 3708 protocol converter. To
find a number in your area, ask your IBM SE, or order book number GC-34-22-34.
It has a current list of all the public IBMLink phone numbers in it.

Once you have the required phone number, you can add it to the Pmcomm dialing
directory. You should set the Parity to Even,the Data bits to 7, and the Stop
bits to 1. The terminal type should be set to VT100. Once connected you will
see a prompt that asks you for your terminal type. If you press enter now it
will display a list of available terminals. The best choice here is to select
VT220, which is selection 18. Pmcomm supports most of the VT220 commands when
in VT100 mode, and it supports all that are used with IBMLink. By selecting
VT220 you are able to use additional commands that are not available with
VT100. If you select VT220 the first nine PF keys will be the numeric key pad
keys (the num lock must be off). For example PF1 will be the 1 on the key
pad,PF2 will be 2 and so on. For PF10 it will be the F1 key,PF11 will be the F2
key and PF12 will be the F3 key. To do a reset, press the Ctrl-R, and to do a
clear press the Ctrl-C.

Once logged onto IBMLink just follow the prompts and you shouldn't have any
problem.


ΓòÉΓòÉΓòÉ 13.3. How to Use a REXX program as a script. ΓòÉΓòÉΓòÉ

A REXX program can only be executed from Pmcomm using the shell command from an
internal script. This script can then either be invoked from the menu or by
entering it, into the dialing_directory .


ΓòÉΓòÉΓòÉ 14. Troubleshooting. ΓòÉΓòÉΓòÉ

Following are some problems that may occur when using Pmcomm.


ΓòÉΓòÉΓòÉ 14.1. Device Open error. ΓòÉΓòÉΓòÉ

This message is displayed if Pmcomm can not open the specified device. If you
are trying to open COM1, for example, and another program already has it open
then this message will be displayed. If you are using the com ports on the
machine you are running Pmcomm on (not across a LAN). Then you must have the
com port device driver installed. There are two device drivers supplied with
OS/2, com02.sys (for IBM PS/2's), and com01.sys for AT class machines. If you
are running a PS/2, for example, you should have a statement in your config.sys
file, DEVICE=C:\OS2\COM02.SYS. If not you will get the device open error. The
default when installing OS/2 is not to install the device driver, so make sure
that you either have, DEVICE=C:OS2\COM02.SYS or DEVICE=C:\OS2\COM01.SYS in your
config.sys file.

If you get this message when trying to access a com port on a server, refer to
the Modem_Pool section. One of the common problems is not first logging onto
the network before trying to access the com port. Also make sure you use Alias
names that don't conflict with names on the local machine. For example don't
try to use the name COM1 for the name of the remote com port. Instead use a
name like MODEM1, or PMCOMM1.


ΓòÉΓòÉΓòÉ 14.2. File transfers not available. ΓòÉΓòÉΓòÉ

If you have Monitor_DCD turned on under Port Options and Pmcomm does not detect
DCD then the upload and download options will be greyed out. You can turn the
Monitor DCD option off and you will then be able to transfer files. Some common
reasons for Pmcomm not being able to detect are:

 Serial cable that does not support the DCD line.
 Modem not configured to have DCD follow the state of the phone line.
 Modem does not support DCD.

 The monitor DCD option should also be turned off if using Pmcomm with a modem
 pool.


ΓòÉΓòÉΓòÉ 14.3. Pmcomm will not dial out. ΓòÉΓòÉΓòÉ

The most common cause of this is a DOS program that has corrupted the com port.
Compiled basic program that are executed in the DOS box, for example will
sometime poll the available devices. When this happens the com device driver is
effected and Pmcomm will not be able to send information to the com port. When
this happens you will have to IPL (boot) the computer.


ΓòÉΓòÉΓòÉ 14.4. Help not available. ΓòÉΓòÉΓòÉ

This message will be displayed if Pmcomm can not find the pmcomm.hlp file in
the current directory. If you have Pmcomm installed in a Group menu make sure
that you have the working directory set to the directory that Pmcomm is
installed in.