I-Bus IBC 2606, User Manual

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42 IBC 2606 User's Guide
B.8. System I/O Ports
Table B-8: System I/O ports
Addr. range (Hex) Device
000-01F DMA controller
020-021 Interrupt controller 1, master
022-023 Chipset address
040-05F 8254 timer
060-06F 8042 (keyboard controller)
070-07F Real-time clock, non-maskable interrupt (NMI) mask
080-09F DMA page register
0A0-0BF Interrupt controller 2
0C0-0DF DMA controller
0F0-0F8 Math co-processor
1F0-1F7 Fixed disk
2F8-2FF Serial port 2
3B0-3BB VGA adapter
3C0-3DF VGA adapter
3F0-3F5 Diskette controller
3F8-3FF Serial port 1
B.9. Interrupt Assignments
Table B-9: Interrupt assignments
Interrupt# Interrupt source
IRQ 0 Interval timer
IRQ 1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ 8 Real-time clock
IRQ 9 VGA
IRQ 10 Available
IRQ 11 Available
IRQ 12 PS/2 mouse
IRQ 13 INT from co-processor
IRQ 14 Fixed disk controller
IRQ 15 Available
IRQ 3 Serial communication port 2
IRQ 4 Serial communication port 1
IRQ 5 Available
IRQ 6 Diskette controller (FDC)
IRQ 7 Available