Digital Equipment FR-902AA-A3, Service Maintenance Manual

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Digital STARION 400i - 900i PC Device Mapping
MCS Logistics Engineering - Nijmegen 71
S
T
A
R
I
O
N
4
0
0
i
-
9
0
0
i
Computer Interrupt Levels
Interrupt Number Interrupt Source
IRQ0 Timer tick
IRQ1 Keyboard controller
IRQ2 Cascade interrupt
IRQ3 Modem or COM2
IRQ4 COM1
IRQ5 Sound Blaster emulation or LPT2
IRQ6
Diskette (floppy disk) drive (if enabled)
IRQ7 LPT1, LPT3 (if enabled)
IRQ8 Real Time Clock (RTC)
IRQ9
Available
IRQ10 Boca sound card wave table player/recorder
IRQ11 Available
IRQ12 Mouse
IRQ13 Math co-processor
IRQ14 IDE primary
IRQ15 IDE secondary CD-ROM
DMA Channel Assignment
Channel Controller Function
0 1 Boca sound card - full-duplex
1 1 Sound card
2
1 Diskette (floppy disk) controller (if enabled)
3 1 ECP
4 2 Cascade DMA
5
2 Not used
6 2 Not used
7 2 Not used