8 Nov
2006
8 Nov
'06
2:54 p.m.
Henk wrote...
Jep, I checked the switches, they are set just like
you said: 1-2-7 ON,
rest OFF :-). I toggled 1-2-7 to OFF an back ON again, but the problem
is still here. To clarify, I get only the (Program) line, and then the
cursor moves to the next line. I do *not* get the ">>>" console
prompt.
A few things come to my (new and uninformed) brain on this.
Perhaps your console emulator/diagnostic rom is bad? This is on the MFM card
right next to the other roms. If you have another MFM, I'd swap it. If it
fixes the problem. try moving the console/diag rom from the working one to
the non-working one. If it then works, you know the first one had a bad
console/diag rom.
The M7090 board has (I *THINK*) little purpose other than signal level
conversion and/or conditioning. All the real logic (and the 8085!) is on the
MFM board.
So if it's not a bad console/diag rom, I think it smells of MFM failure.
Whichever you find easiest/possible to replace first....
Jay