Texas Instruments Extensa 450 Series Maintenance Manual page 44

Controller
1
1
1
1
2
2
2
2
Priority
1
2
3
4
5
6
7
8
10
11
12
13 IRQ3
14
15
16
17
4-4 Theory
Table 4-2 DMA Channels
Channel
0
1
2
3
4
5
6
7
Table 4-3 IRQ Interrupt Levels
Interrupt
Number
SMI Power management unit
NMI Parity Error Detected,,I/O Channel Error
IRQ0 Interval Timer,,Counter 0 Output
IRQ1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ8 Real Time Clock
IRQ 9 Cascaded to INT 0AH (IRQ 2)
IRQ10 Reserved
IRQ IRQ 12,PS/2 Mouse
11,Reserved
9
IRQ13 INT from Coprocessor
IRQ14 Hard Disk Controller
IRQ15 Reserved
Serial Comm
Port 2
IRQ4 Serial Comm Port 1
IRQ5 Reserved
IRQ6 Diskette Controller
IRQ7 Parallel Port
Address
0087
0083
0081
0082
Cascade
008B
0089
008A
Interrupt Source
Function
Spare
Spare
Diskette
Spare
Cascade
Spare
Spare
Spare