4.5
In Fig. 18, the lines identified DA7--DA0 are the input/output bus bits
Microprocessor/
7--0. This 8 bit bus is used to pass all data and address information
between the AY-3-8910/8912 and the system processor.
Microcomputer
BC1, BC2 and BDIR are bus control signals generated by the
Interface
processor to direct all bus operations. These operations are identi-
fied as Latch Address, Write to PSG, Read from PSG, and Inactive.
The following Sections detail specific interfaces to several popular
microprocessors/microcomputers.
Fig. 18 MICROPROCESSOR/MICROCOMPUTER INTERFACE
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