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ASMB-781 User Manual
78
B.21
DMA Channel Assignments
B.22
Interrupt Assignments
380-38F
SDLC, bisynchronous 2
3A0-3AF
Bisynchronous 1
3B0-3BF
Monochrome display and printer adapter (LPT1)
3C0-3CF
Reserved
3D0-3DF
Color/graphics monitor adapter
3F0-3F7
Diskette controller
3F8-3FF
Serial port 1
Table B.21: System I/O ports
Table B.22: DMA channel assignments
Channel
Function
0
Available
1
Available
2
Available
3
Available
4
Cascade for DMA controller 1
5
Available
6
Available
7
Available
Table B.23: Interrupt assignments
Priority
Interrupt#
Interrupt source
1
NMI
Parity error detected
2
IRQ0
Interval timer
3
IRQ1
Keyboard
-
IRQ2
Interrupt from controller 2 (cascade)
4
IRQ8
Real-time clock
5
IRQ9
Cascaded to INT 0A (IRQ 2)
6
IRQ10
Available/Serial communication port 4
7
IRQ11
Available
8
IRQ12
PS/2 mouse
9
IRQ13
INT from co-processor
10
IRQ14
Available
11
IRQ15
Available
12
IRQ3
Serial communication port 2
13
IRQ4
Serial communication port 1
14
IRQ5
Serial communication port 3
15
IRQ6
Available
16
IRQ7
Parallel port 1 (print port)
Summary of Contents for ASMB-781
Page 11: ...Chapter 1 1 Hardware Configuration ...
Page 22: ...ASMB 781 User Manual 12 ...
Page 23: ...Chapter 2 2 Connecting Peripherals ...
Page 38: ...ASMB 781 User Manual 28 ...
Page 39: ...Chapter 3 3 BIOS Operation ...
Page 63: ...Chapter 4 4 Chipset Software Installation Utility ...
Page 66: ...ASMB 781 User Manual 56 ...
Page 67: ...Chapter 5 5 VGA Setup ...
Page 69: ...Chapter 6 6 LAN Configuration ...
Page 71: ...Appendix A A Programming the Watchdog Timer ...
Page 79: ...Appendix B B I O Pin Assignments ...
Page 90: ...ASMB 781 User Manual 80 ...
Page 91: ...81 ASMB 781 User Manual Appendix B I O Pin Assignments ...