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kellys_eye · 19th Aug 2018, 5:24 pm

Thanks for the feedback but the issue is now moot as the board had originally suffered a short-to-chassis (blowing the top off a bus interface chip LS245) and the main processor, whatever it is, has no activity on any pins - there are some fixed logic levels at various places but nothing 'changes' even at boot up so I'm assuming it's dead and BER.

19th Aug 2018, 5:24 pm	#5
kellys_eye Octode Join Date: Jan 2014 Location: Oban, Scotland, UK. Posts: 1,129	Re: Interface card on 486 processor Thanks for the feedback but the issue is now moot as the board had originally suffered a short-to-chassis (blowing the top off a bus interface chip LS245) and the main processor, whatever it is, has no activity on any pins - there are some fixed logic levels at various places but nothing 'changes' even at boot up so I'm assuming it's dead and BER.