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Old 01-23-2008, 11:08 AM
PacMan PacMan is offline
Junior Member
Join Date: Feb 2007
Location: Retro Heaven
Posts: 7
Default Got my 8800 kit back again =)

Well I finished my kit this summer and got it working but didn't think I was going to have the time to use so I decided to sell it to a friend

Turned out that it was him that didn't have the time to use it (He started working for me ) so I just bought it back from him. Unfortunately it seems he has done something nasty with it. The outputs from the 8212 on the CPU card is always in a high state and the CPU is unable to write to the memory but I can still change the content from the control panel.

So I was wondering if anyone has seen this before ? Could it be that the 8212 has gone kaput or are there other issues I should look into ? I will dig out my scope this evening and check all the clock signals around the chip to see all is OK.

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