Table 91. 82c59a master and slave interrupt sourc – Intel 386 User Manual
Page 204

9-5
INTERRUPT CONTROL UNIT
Table 9-1. 82C59A Master and Slave Interrupt Sources
Master IR
Line
Source
Connected
by
Slave
IR Line
Source
Connected
by
IR0
TMROUT0
(timer control unit)
Hardwired
IR0
V
SS
INTCFG.0=0
INT4
(device pin)
INTCFG.0=1
IR1
V
SS
P3CFG.2=0
IR1
SSIOINT
(SSIO unit)
INTCFG.1=0
INT0
(device pin)
P3CFG.2=1
INT5
(Device pin)
INTCFG.1=1
IR2
Slave 82C59A
Cascade
Hardwired
IR2
TMROUT1
(timer control unit)
Hardwired
IR3
SIOINT1
(SIO unit)
INTCFG.6=0
P3CFG.1=0
IR3
TMROUT2
(timer control unit)
Hardwired
INT8
(device pin)
INTCFG.6=1
P3CFG.1=1
MCR0.3=1
IR4
SIOINT0
(SIO unit)
INTCFG.5=0
P3CFG.0=0
IR4
DMAINT
(DMA unit)
INTCFG.4=0
INT9
(device pin)
INTCFG.5=1
P3CFG.0=1
MCR1.3=1
INT6
(device pin)
INTCFG.4=1
IR5
V
SS
P3CFG.3=0
IR5
INT6
(device pin)
INTCFG.4=0
INTCFG.2=1
INT1
(device pin)
P3CFG.3=1
DMAINT
(DMA unit)
INTCFG.4=1
INTCFG.2=1
IR6
V
SS
P3CFG.4=0
IR6
V
SS
INTCFG.3=0
INT2
(device pin)
P3CFG.4=1
INT7
(device pin)
INTCFG.3=1
IR7
V
SS
P3CFG.5=0
IR7
WDTOUT#
(watchdog timer)
Hardwired
INT3
(device pin)
P3CFG.5=1
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