Apple 13-0010--001 Computer Drive User Manual


 
ELITE SERIES USER MANUAL THEORY OF OPERATION
of the EPROM and the serial to parallel convert-
er are controlled to insure that no contention
ever occurs on the bus.
7.2.9. Controller Command Structure
The Elite Controller Card responds to three
types of commands. The first type is the device
command, characterized by bringing the DEV line
low as shown in the following table. (See the
Apple II Reference Manual for an explanation of
the DEV line.)
Slot Memory Address for DEV
0 (not allowed)
1 $C090—$C09F
2 $C0A0-$C0AF
3 $C0B0-$C0BF
4 $C0C0-$C0CF
5 $C0L0-$C0DF
6 $C0E0-$C0EF
7 $C0F0-$C0FF
Fig. 7-3: DEV Line Address Ranges
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