Tarbell is making me insane
grant at stockly.com
Wed Nov 7 02:07:13 CST 2007
I'm about to go insane.
Here is what I have:
-Fake Altair (rock solid in everything but tarbell)
-Tarbell 1011A, which SEEMS to be better than the 1011D.
-4xMITS 16MCS 16k memory cards
-5xSEALS 8k SRAM
-MITS Rev0 CPU
Anyway...it doesn't work at all if I have a 16k memory card and an 8k
memory card. The 1011A works best (gets the furtherest in all
tests). If I'm lucky it asks me how many disks I have!
It also doesn't work with 3 seals 8k cards.
When I put in a CompuPro active terminator on the end of the bus, the
computer goes crazy and doesn't do anything. Installing an
"Industrial Micro Systems" terminator from 1980 it changes
operational characteristics, but still doesn't quite do it.
I had been trying to make the stupid thing work for months, on and off...
Well, I decided to stop trying to limit the number of cards on the
bus. I put in 5 8k seals cards and the stupid thing boots and runs
commands. Before while loading BDOS it would most of the time report
corrupted or missing sectors. Or just print trash. Now I can run
DISKDMP and programs like that.
After working flawlessly for a few minutes its back to crazy. I can
single step through the tarbel boot program and see it going crazy... : (
I'd like the thing to be rock solid with minimal memory cards.
Can anyone think of WHY the tarbel card is so much trouble? I burn
EPROMs all day long with this Altair. It takes 3 minutes to burn a
1702 and I've never had one fail! I can also leave it playing music
for all night long with no problems!!!
I need help!!! : (
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