Original Message Date: 23 Aug 92  14:39:12
From: Tom Jennings on 1:125/111
To: Uucp on 1:125/555
Subj: re: cdtrap
^AINTL 1:125/555 1:125/111



IO port addresses:

3f8  com1
2f8  com2
3e8  com3 irq5
2e8  com4 irq2



to: pozar@kumr.lns.com

> Can you set it up to address different IRQ and Base 
> addresses?  We could monitor the wierd com3 and com4 setups 
> that I did for the NOS box at toad  hall. 
 
I *knew* you were gonna ask that... :-)
 
It was a last minute idea... and the CDTRAP interface sucks. I will 
rearrange it.
 
1. It's default behaviour will be as a front panel,not a CDTRAP.
 
2. It'll get renamed LINEMON or something.
 
3. The command line args will default to monitor only, and E and D to 
enable/disable the trapping biz.
 
4. I'll add supprt for COM3 and COM4. Do you have the I/O base 
addresses handy? IRQ doesn't matter, as it just peeks at the ports 
every timer tick. 
 
5. Use a software "oneshot" on signals, so that they stay light for at 
least N timer ticks, so you can see transients. (I'll start with N=2.)
PPlease note though, the interrupt service routines generally 
*garentee* that my program will NOT see Tx and Rx... since I just jam 
in there randomly, and each Rx/Tx interrupt servicing kinda removes 
the status bit!


Now I could make is support all COM ports entered...
 
LINEMON 1 3 4           monitor COM1, COM3, COM4
LINEMON 3 T             CD-trap COM3
LINEMON D               disable CD-trap
 
ANd simply use more of the top screen line, and (sigh) include com#:
 
COM1: Rx Tx CTS CD   COM2: Rx Tx CTS CD ...
 
The damn thing is written in assembly. Parsing all this is a pain 
then. I'll probably ahve to write a "C" front end... sigh... I will 
probably do it X00/XU style; a "driver" TSR that does the work, and a 
C program ala XU that sets & displays...
 
Whatever happened to that simple program I wrote...