On Mon, Mar 29, 2010 at 04:57:54PM -0400, Ethan Dicks wrote: > The other board (with 6540 ROMs and 2114 SRAMs and the broken Japanese > CHRGEN ROM) passes all RAM tests (and does come up with the BASIC > splash message), but still locks up on cassette operations. Could it be a broken 6522 (or is the PET tape port also driven by a 6520)? If I remember correctly, the very first defect of my C64 was that it hung when trying to write to tape. Apparently, the 6510 on-chip I/O port had been damaged so that when it tried to wiggle the CASS WRITE line, also the memory configuration lines were being changed. Marko Message was sent through the cbm-hackers mailing listReceived on 2010-03-30 05:00:04
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