There are spare bussed lines on the backplane. The I/O decodes can be
picked off just after the I/O address decoder on each sound board and
brought down to three unused bussed lines on the backplane. Decode the
I/O adr for the sound board on the CPU card based on I/O adr and desired
sound card. You also have to mix the outputs of the speech and the three
sound cards together, which could be done on the new CPU card.
Received on Mon May 5 14:26:08 1997
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