Re: Assistance please...

From: <mccullar_at_flash.net>
Date: Tue May 01 2001 - 00:52:02 EDT

I had a very similar problem last week. The tone sequence indicated a bad
vector RAM chip, but replacing it didn't change anything. The problem
turned out to be a bad 74LS245 in the lower right-hand corner of the board.
It's the vector data bus buffer chip that isolates it from the CPU data bus.

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Received on Tue May 1 00:47:46 2001

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