Hi Ruud, On 8/10/11 12:42 PM, Ruud@Baltissen.org wrote: > Is it possible to say what belongs in the smaller empty socket? I > must be a ROM because there isn't one on the board But OTOH the > pinout is weird, certainly not like any (EP)ROM I know. The article does not mention this socket. The photo accompanying the article is small and not very clear. It's hard to tell but it looks like the socket may be empty. Dave Dunfield's photo also shows it empty: http://www.classiccmp.org/dunfield/pet/h/pet8032o.jpg Maybe it doesn't need ROM. The article seems to indicate that the RAM on the board can be accessed from the PET. Perhaps the board tristates the Z80 by default, the PET loads Z80 code into the RAM, then some bits on an I/O port start the Z80 running? Regards, Mike -- Mike Naberezny (mike@naberezny.com) http://6502.org Message was sent through the cbm-hackers mailing listReceived on 2011-08-10 21:00:23
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