DEC DECpc LPx User Manual

Device Mapping Digital DECpc LPx/LPx+
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I/O Address Map (LPx 560/566)
Range (hexadecimal)
Function
060 to 064
Keyboard/mouse controller
0F0 to 0FF
Math co-processsor
1F0 to 1F7
IDE controller (if enabled)
278 to 27F
LPT2 (if enabled)
2F8 to 2FF
COM2 (if enabled)
378 to 37F
LPT1 (if enabled)
3BC to 3BE
LPT3 (if enabled)
3F0 to 3F7
Diskette controller (if enabled)
3F8 to 3FF
COM1 (if enabled)
PCI Configure Space Address Map (LPx 560/566)
Range (hexadecimal)
Function
C0xx
CPU bridge
C1xx
Onboard PCI SCSI (if applicable)
C2xx
ISA bridge
C6xx
PCI slot 1
C7xx
PCI slot 2
C8xx
PCI slot 3
Computer Interrupt Levels (LPx/LPx+)
Priority
Interrupt Controller
Interrupt Number
Interrupt Source
1 1 IRQ0
Timer tick
2 1 IRQ1
Keyboard controller
1 IRQ2
Cascade interrupt
3 2 IRQ8
Real-time clock (RTC)
4 2 IRQ9
Reserved
5 2 IRQ10
Reserved
6 2 IRQ11
Reserved
7 2 IRQ12
Mouse interrupt
8 2 IRQ13
Math coprocessor
9 2 IRQ14
Hard disk drive
10 2 IRQ15
Reserved
11 1 IRQ3
COM2, COM4
12 1 IRQ4
COM1, COM3
13 1 IRQ5
Reserved
14 1 IRQ6
Diskette drive
15 1 IRQ7
LPT1, LPT2, LPT3

DEC DECpc LPx Specifications

General

Brand	DEC
Model	DECpc LPx
Category	Desktop
Language	English