Figure 919. cascading external 82c59a interrupt c – Intel 386 User Manual
Page 230
9-31
INTERRUPT CONTROL UNIT
Figure 9-19. Cascading External 82C59A Interrupt Controllers
A2857-01
READY#
W/R#
D/C#
ADS#
CLKOUT
CLK2
INTA#
and
READY#
State
Machine
INTA#
External
CAS
Decode
CAS0
CAS1
CAS2
External
BLE#
RD#
WR#
D7:0
82C59As
Intel386™ EX
Processor
PLD
CAS0
CAS1
CAS2
CS
x
#
INTA#
CS
y
#
D7:0
D7:0
A0
RD#
WR#
CS
y
#
CAS0
CAS1
CAS2
A0
RD#
WR#
CS
x
#
INTA#
Latch
INT
INT
y
INT
INT
x
LBA#
M/IO#
READY#
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