Re: Solved: Odd behavior with a STorm-ST board?
Posted: 12 Feb 2026 08:43
So what was the actual problem?
We welcome retro users & hardware gurus alike! Come and join the party :)
https://www.exxosforum.co.uk/forum/
Sorry - Holger adapted the original ALTRAMON.PRG that goes in the AUTO folder.
Darklord wrote: 12 Feb 2026 18:39Sorry - Holger adapted the original ALTRAMON.PRG that goes in the AUTO folder.
Here is how Holger explained it to me when I asked about it:
-----------------------------------------------------------------------------------------
"Step2 involves to access a specific register inside the memory chip.
It requires a kind of unlock procedure, a special sequence of specific accesses.
But it seems the memory chip is somehow miscounting the steps of the unlock procedure and stays locked.
I suspect this is due to signal integrity of UDS, LDS and AS signal lines, namely to much overshoot/undershoot.
But luckily this is no problem, since step1 has already made all necessary initialializations.
So instead of step2 we are doing step1.5, a short read/write test on the memory chip to confirm the proper initialialization."
-----------------------------------------------------------------------------------------
Hope this helps. I'm just really excited that it's working as intended now.
Again, just can't give enough credit to Holger Zimmerman and the ThunderSTorm team for their efforts. :dualthumbup:
PS Just curious - is anyone else out there using a STorm-ST with a 68030? I have yet
to here anyone join in on the conversation since I posted in various places about my
problem.