Computer Interrupt Levels; Dma Channel Assignment; Pci Configure Space Address Map - Digital Equipment CELEBRIS 486 Service Maintenance Manual

Digital CELEBRIS 486 PC Digital CELEBRIS 486 PC

Computer Interrupt Levels

Interrupt Number
IRQ1
IRQ3
IRQ4
IRQ6
IRQ7
IRQ12
IRQ13
IRQ14

DMA Channel Assignment

Channel
0
1
2
3
4
5
6
7

PCI Configure Space Address Map

Range (hex)
C0xx
C1xx
C2xx
C6xx
C7xx
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Interrupt Source
Keyboard controller
COM2 (if enabled)
COM1 (if enabled)
Diskette drive (if enabled)
LPT1, LPT2, LPT3 (if enabled)
Mouse interrupt (if enabled)
Math co-processor
Hard Disk Drive (if enabled)
Controller
1
1
1
1
2
2
2
2
Function
CPU bridge
Not used
ISA bridge
PCI slot 1
PCI slot 2
Function
Refresh
Not used
Diskette controller (if enabled)
Not used
Cascade DMA
Not used
Not used
Not used
Device Mapping Device Mapp ing
53 53
C
E
L
E
B
R
I
S
4
8
6