Space Centurion Posted May 15, 2014 Share Posted May 15, 2014 Thanks Ed, that's good to know! I've been replacing some chips trying to get my card to work. I forgot to check the null modem pinouts..oooppss...but in case anyone else is trying to replace some chips, this is what I have done thus far... Read #21 in this thread. Replaced U20 TL082 and U19 TL084 (Op-Amps), still same issues as #1 and #21. Replaced U13 74LS251, still same issues as #1 and #21. So next on the list, check the null lines...... :-) Quote Link to comment Share on other sites More sharing options...
Space Centurion Posted May 16, 2014 Share Posted May 16, 2014 By any chance...would anyone be willing to share their settings from TCPSER or BBSSERV or whatever you are using to get the 4a to BBS by telnet? Thanks, it would help me (along with a lot of other people) out greatly! Quote Link to comment Share on other sites More sharing options...
Fritz442 Posted April 12, 2015 Share Posted April 12, 2015 (edited) I built the test/loop cables and used 0291B.DSK & MM Cart as Cantstopclicking mentioned in post#4 I ran it on all my RS232 cards and all tests passed...in a continuous loop. Cables work great. One card shows BAD ROM error message It is my only Myarc rs232 card My question is:since this is a TI test cable and TI Diag, Could this be why it shows as fails? The card seems to operate OK. Any ideas? Edited April 12, 2015 by Fritz442 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted April 13, 2015 Share Posted April 13, 2015 It may be because the DSR is different, so specific code snippets the DIAG cart is looking for aren't present in the ROM. Quote Link to comment Share on other sites More sharing options...
Fritz442 Posted April 13, 2015 Share Posted April 13, 2015 It may be because the DSR is different, so specific code snippets the DIAG cart is looking for aren't present in the ROM. Confirmed...I found a second Myarc RS232 card and get the same BAD ROM message! 1 Quote Link to comment Share on other sites More sharing options...
RobertLM78 Posted April 14, 2015 Share Posted April 14, 2015 The diagnostic program cannot run with Editor/Assembler because of AORG >7120 at the beginning of the file. Unless, of course, you somehow installed RAM at that location. I'd expect that loading seems to work, but the console will lock up on start or do other weird things. The REF/DEF table will be updated, but points into the void. If you remove that line or do a AORG >A000 there is some hope that you can assemble it for E/A as usual, and it may run. Take care of the memory test routine; it must not overwrite the test program. Neither changing to AORG >A000 nor removing the line works. It assembles fine, but it sure doesn't run. Too bad. I'd really like to get to the bottom of what's up with my 32k card... Quote Link to comment Share on other sites More sharing options...
+mizapf Posted April 14, 2015 Share Posted April 14, 2015 Neither changing to AORG >A000 nor removing the line works. It assembles fine, but it sure doesn't run. Too bad. I'd really like to get to the bottom of what's up with my 32k card... You want to test the 32K memory, not the RS232? You could also write your own test program. Plug in Editor/Assembler and use the CALL LOAD/CALL PEEK that become visible in TI BASIC. Will take some time, but at least you could continue testing. 2 Quote Link to comment Share on other sites More sharing options...
RobertLM78 Posted April 15, 2015 Share Posted April 15, 2015 You want to test the 32K memory, not the RS232? You could also write your own test program. Plug in Editor/Assembler and use the CALL LOAD/CALL PEEK that become visible in TI BASIC. Will take some time, but at least you could continue testing. That's exactly what I was thinking of doing Quote Link to comment Share on other sites More sharing options...
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