if I saw this machine in 1981, I never really had the opportunity to play with it Initially I thought the 6809 was running on it's ram and communicating with the 6502... (a bit like the madison zram with it's z80) recently I found the schematics of the superpet board (combined one) Finally (apparently according what I saw) 1/ either the 6809 or the 6502 is running ? 6809 stopped by the dma ? 6502 stopped by shutting down the power ? 2/ the extra memory is only accessed as 16 page s of 4k in 9000 ? 3/ it add a serial port 4/ a protection dongle Initially I thought the 6809 was running on it's ram and communicating with the 6502... how are the rom decoded ? I dont really understand... the standard rom are only 'seen' by the 6502 ? the extra rom only 'seen' by the 6809 ? and mapped at the same place ? -- didier Message was sent through the cbm-hackers mailing listReceived on 2016-11-01 13:00:02
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