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
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
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?
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