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BRKBOX.DOC
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1985-11-28
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3KB
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70 lines
BRKBOX by Tim Burmeister
V1.1 fixed snow when using IBM color card
detects monochrome monitor automatically and changes display to all white
removed time out error indicator - replaced with transmit indicator
can use on second serial port
SYNTAX
BRKBOX -for com1 will display graphic screen if you have a color monitor
BRKBOX= -for com1 no graphic screen (good for batch files)
BRKBOX 2 -for com2 will display graphic screen if you have a color monitor
BRKBOX=2 -for com2 no graphic screen (good for batch files)
(if you have a monodisplay the graphics intro is not displayed)
ERROR BEEPS
STEADY TONE error in the parameters you gave it
PULSED TONE program is already installed
NOTES
Uses interupt 1C
uses less than 1k memory
writes screen only during vertical retrace
If the com port has not been initialized you wont see any display
NO DISPLAY ????
Try putting your modem in ALB or if you dont have com2 port type brkbox 2
and you will see the display (although it wont mean anything)
This program will display in the upper right hand side of display
the active (SPACE, CONTROL ON, POSITIVE VOLTAGE) RS232 signals. The DTE
generated signals are displayed in red, the DCE in green, also uart errors
are shown in white. ***** NOTE if you have a mono display everything is white
DISPLAY DEFINTIONS
TXD TRANSMIT DATA
FRM FRAMING ERROR
PAR PARITY ERROR
OVR OVERRUN ERROR
CD Recieve Line Signal Detected --CARRIER DETECTED
RNG RING INDICATOR
DSR DATASET READY
CTS CLEAR TO SEND
DTR DATA TERMINAL READY
RTS REQUEST TO SEND
This program installs itself in memory and the display can be toggled off and
on by depressing the ALT AND LEFT HAND SHIFT KEYS simultaeneously.
The display is turned on initialy (if you dont see anything put your modem
into analog or local loopback). Since this routine is active only about 18
times per second it will not catch all error conditions that may occur
during a normal communications session.
IT HAS BEEN KNOWN TO CAUSE INTERFERENCE WITH COM PROGRAMS AT 9600 BAUD
**********************************************************************
If the display is active while accessing a HALF-HEIGHT floppy drive
it causes data errors. If so toggle the display off while accessing
the floppy.If anyone has any info about this I would appreciate hearing from you.
I would like to hear your comments and suggesstions
Tim Burmeister