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4 Am79C930
PRELIMINARY
BLOCK DIAGRAM
Bus Interface Unit
A14–0 or
LA23–17, SA16–0
D7–0
CLKIN
Slave
Control
PCMCIA
and ISA
Memory
and I/O
Address Buffer
Data Buffer
SIR0
System
Interrupt
Generator
SIR1
...
SIR7
ISA Memory Base
ISA I/O Base
MD[7:0] MA[16:0]
80188
Interrupt
Generator
IREQ
PCMCIA
Config Registers
ALE
CA16
Latch
Bus
Multi-
plexer
CAD7–0
CA15–8
MIR0
MIR1
...
MIR15
MOE
MWE
UCS
LCS
SRDY
XCE
FCE
TAICE
SCE
INT1
RESET
PCMCIA
or
ISA Control Signals
Plug and Play
Control Module
Slave
Control
and
Arbitration
for
Memory
Interface
Bus
20183B-2