16 Dec
2009
16 Dec
'09
6:36 a.m.
On Dec 16, 2009, at 9:10 AM, Bob Brown wrote:
Thanks to everyone's advice. You were all right
(as was my original
suspicion)...that it was the video memory.
Thanks to the pointers on where the video memory was (I don't have
schematics or other tech info on this system).
I was able to find the bad memory...and, amazingly, I found that I had
another 2114 that I could put in (I took it out of my heathkit
microprocessor-trainer. And it makes the trs-80 work much betta!
Excellent. Good job!
So...a couple of questions:
1) How can I get just 1 2114 that works to replace the one I took
out of my heathkit? (the place that people pointed-out for buying
chips
has a $25 minimum..and I don't need that many chips).
There's always eBay..
2) What can I do with a model II now? When it is
booted into CP/M,
will it only run CPM stuff specifically for the trs-80 or will it run
any CP/M stuff that is on 8" floppy?
Most any CP/M software. That's the whole point of CP/M.
3) Where can I get some disks with interesting goodies
to run on
the model II? (most of the disks that I have with it have some office
software and backups of some data...not too much of interest).
Can't help you there..
-Dave
--
Dave McGuire
Port Charlotte, FL