Hello all,
It's been a while since I've been able to sit down
in front of my machine to try to debug the issues I'm having
with the FP mini I recently built.
As a recap, I've got the FP mini installed in a
Northstar Horizon that is otherwise fully functional.
Basically, the FP Mini is not working correctly at all in this
configuration. The only function that works is the Examine
function. I can successfully load an address, and examine it.
I can manually change the address and examine other memory
locations, and consistently get the correct values. All other
functions (examine next, deposit, deposit next) give me nonsense
results.
Tonight, I was working on an unrelated project -
restoring a California Computer Systems 6116 16k RAM board.
Without boring you with the restoration details, I have a
single 4K bank currently working (burning in the 2114 RAM chips
a few at a time). I thought I'd give the FP mini a try with
this board. I have more functionality! I can Examine and
Deposit successfully now! Examine Next and Deposit Next are
still giving me nonsense values (random addresses), but this is
very encouraging!
The difference? The Northstar was originally
running with a Northstar HRAM 64k dynamic RAM board, which has
never given me any issues. Now I'm using a CCS 16k Static RAM
board. I'm wondering if it's a static-vs-dynamic thing. Anyone
else running the FP mini in a dynamic RAM machine?
The list has been quiet about the FP mini recently.
I'd like to hear how everyone else is doing - does anyone else
have more functionality than this?
Thanks!
Ian
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