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- DCOM V2.0 Serial Data Analyzer Page 1
-
-
- DCOM is a simple but useful datacom capture program that runs on a PC or
- AT compatable machine. Two serial ports are required. Data is captured
- as it flows in from both ports The data is then directed out to the opposite
- port that it was received from. Although no additional hardware is required,
- additional serial cables to connect to the PC are required.
-
-
- This program is being distributed as Shareware.
- If this program is of any use to you then you should
- register your copy by sending $35.00 (US) to the author.
- With registration the latest version and documentation of the program
- (without the starup screen) will be sent along with some additional
- features (Macro keys and some basic ANSI terminal emulation).
- Send all registrations to:
-
-
- Jim Davis (CID 76535,2156)
-
- 1074 Hetrick Avenue
-
- Arroyo Grande, CA 93420
-
-
- Make check payable to Jim Davis.
-
-
- Assume the following duplex connection between device 1 and 2 (figure 1).
- Data is flowing between the two devices. There may be some problem, but
- there isn't an easy way to tell whats wrong without interrupting the
- connection and stopping the protocol.
-
-
-
- /----------\ /----------\
- | | | |
- | Device 1 | | Device 2 |
- | | | |
- \----------/ \----------/
- \ /
- \ /
- \ Data [x]-> /
- ----------------------------------
- <-Data [y]
-
-
- (figure 1)
-
- DCOM V2.0 Serial Data Analyzer Page 2
-
-
- With DCOM running on the PC (figure 2), the data will be captured,
- displayed, and then sent to the remote device (in both directions).
- The serial data can be examined as it happens, or viewed later from the
- captured data buffer or saved to disk and printed.
-
-
-
- /----------\ /----\ /----------\
- | | |Data| | |
- | Device 1 | |xy | | Device 2 |
- | | | | | |
- \----------/ \----/ \----------/
- \ |---------| /
- \ | PC DCOM | /
- \ Data [x]-> |---------| /
- --------------Port 1 /
- Port 2-------------
- <-Data [y]
-
- (figure 2)
-
-
-
- DCOM supports data rates of 300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
- 57600, and 115200 bps. Note: When running full duplex, a 4MHz PC can keep
- up with data at about 1200 bps. On a 12 MHz AT at full duplex rates of
- 9600 bps can be supported. If an overrun occurs, a message is printed to
- that effect.
-
- DCOM displays the data from each port in different colors so that it can
- be easily examined. The baud rate and color for each of the ports are
- in the DCOM.CFG file. The colors cannot be changed once the program
- starts.
-
- DCOM accepts command line parameters to change the baud rate and
- port colors. The command line parameters will change the contents of
- the DCOM.CFG file. The command line is as follows:
-
-
- DCOM [baud_rate color1 color2]
-
- where baud_rate is 300, 600, 1200, 2400, 4800, 9600, ...
- color1 is 0, 1, 2, 3, 4, 5, 6, .. 15
- color2 is 0, 1, 2, 3, 4, 5, 6, .. 15 (can't be same!)
-
-
- DCOM V2.0 Serial Data Analyzer Page 3
-
- Help Screen
-
- A simple help screen is available when online by pressing the F1 key.
- Here is a brief explaination of what the options are.
-
-
- Display Commands
- ----------------
-
- [+] and [-]
-
- The display commands are used to turn on and off the output to the screen
- as the characters are received at the data ports. Turn the display off
- when it is not necessary to view characters.
-
- [A]scii Toggle
-
- The display mode can be toggled between ASCII and HEX. In HEX mode the
- ASCII equivalent is shown on the right side of the screen.
-
- [ESC]
-
- The escape key will clear the screen.
-
-
-
- System Commands
- ---------------
-
- [1] and [2]
-
- The system commands [1] and [2] open the com ports (1 & 2) for sending data
- from the keyboard. All keys entered on the keyboard are sent to the open
- port except the F10 key which is the only way to CLOSE the port and return to
- the program.
-
- [F2]
-
- The baud rate can be changed once the program is started. Note that changing
- the baud rate amid communications may generate some really wierd characters.
-
- [F10]
-
- To exit the program the F10 key is pressed and then confirmed.
-
-
- DCOM V2.0 Serial Data Analyzer Page 4
-
- Buffer Commands
- ---------------
-
- The data buffer will hold up to 16384 characters. Any bytes sent beyond this
- limit will be lost although they are still displayed to the screen. The
- buffer commands are used to navigate through the buffer from top to bottom
- and to save the buffer to disk.
-
-
- [HOME], [END]
-
- Move the pointer to the beginning (or end) of the buffer and display the next
- (or last) 256 characters.
-
- [PG UP], [PG DWN]
-
- Move the pointer 256 bytes up or down in the the buffer and display the next
- 256 characters.
-
- [DEL]
-
- The delete key is used to delete the contents of the buffer and start over.
-
-
- Cursor Up [], Cursor Down []
-
- Move the pointer 16 bytes up or down in the the buffer and display the next
- 256 characters.
-
-
- [S]ave
-
- Save the entire buffer to the disk file DCOM.BUF. Successive saves will
- append the buffer to the end of the DCOM.BUF file (The first save will
- clear out the old file contents.)
-
-
- Happy Data Comm Analysis. Please send all inquiries and or suggestions
- to the address noted above.