I/O, Memory, and IRQ Details
53
Appendix B
IRQs (Interrupt Request Lines)
Table B-2. IRQs (Interrupt Request Lines)
Interrupt
Source
IRQ0
Timer
IRQ1
Keyboard Controller
IRQ2
Cascade Interrupt Input
IRQ3
COM2 (Not externally available)
Use for second HP-22 on Windows 95
IRQ4
COM1
IRQ5
ECP Printer Port (LPT1)
Use for second HP-22 on Windows NT
IRQ6
3.5-inch Disk Drive
IRQ7
Reserved for HP-22
IRQ8
Real-time Clock
IRQ9
VXI Interface Chip
IRQ10
VXI Interface Chip
IRQ11
SCSI
IRQ12
Mouse
IRQ13
Numeric Co-processor
IRQ14
IDE
IRQ15
Ethernet
NMI
EXMbus I/O Channel Check Asserted
SMI
Power Management
INTA
VGA (not mapped)
INTB
Ethernet (mapped to IRQ15)
INTC
SCSI (mapped to IRQ11)
INTD
VXI Interface Chip (mapped to IRQ9)
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Содержание VXI Pentium Series
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