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Cav · 04 October 2019, 11:12

Hi,

I have this A4000 with an odd problem..

A known working (Actually two different) chipmem module, standard jumper settings.
No chipmem in diagrom. Sometimes 1 MB is found ..

If J214 is changed to pin 1-2 (VBB/MA10).
1 MB of chipram is found every time.

If J214 is changed to pin 1-2 (VBB/MA10).
And a 4 MB module is used, 2 MB chipram is found.

What can be wrong...? :/
Also noticed this morning that fastram has siezed to exist
...
CAS/RAS/CRAS/CCAS/BWsignals are checked ok for continuety...

04 October 2019, 11:12	#1
Cav Registered User Join Date: Jan 2019 Location: Sundsvall Posts: 37	Amiga 4000 - strange chipram behaviour Hi, I have this A4000 with an odd problem.. A known working (Actually two different) chipmem module, standard jumper settings. No chipmem in diagrom. Sometimes 1 MB is found .. If J214 is changed to pin 1-2 (VBB/MA10). 1 MB of chipram is found every time. If J214 is changed to pin 1-2 (VBB/MA10). And a 4 MB module is used, 2 MB chipram is found. What can be wrong...? :/ Also noticed this morning that fastram has siezed to exist ... CAS/RAS/CRAS/CCAS/BWsignals are checked ok for continuety...