William Levak wrote: > > On Thu, 5 Aug 1999, Bo Zimmerman wrote: > > > > > The Commodore SuperPET SP9000 -- Wow, there are not one, but TWO revisions > > of the SP9000 expansion board. The older is a double expansion board, Double? I think there are three... (plus that card mentioned later) You can't see all of of the boards, but my SuperPET picture is of that old version. http://www.jps.net/foxnhare/superpet.jpg > In addition, there should be a small daughter board in a card edge > connector towards the right rear of the top(memory) board. The chips on > the board should be facing towards the rear of the computer. The Waterloo > software will not load without this board. All those boards stack up so high they had to cut a hole in the case (just under the monitor lip) so that card could fit (at least on my SuperPET - which is still non functional...) Will have to check that board's orientation. > The chips in sockets UD11 and UD12 could be anything. Some PET software > required a ROM in these sockets and the switches are a way of turning them > on and off. Also, when SuperPETs were shipped from the factory, they had > ROMs in these sockets. These ROMs had no function that I could find. In > fact, all the ROMs that I saw were actually obselete ROMs, apparently > placed in the sockets for test purposes, and simply left there. Look > carefully at these ROMs. You may have some rare version of an old ROM. Next time I am at my storage unit I'll try to remmeber to take a look... -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-2400 baud Commodore 8-bit page at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011 - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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