Compaq 7RPK11 7000T, Maintenance And Service Manual

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IRQ 7 LPT1 * Reserved, but can be changed
to another IRQ
IRQ 8 Real-time clock
IRQ 9 Reserved for ICH2 system
management bus
IRQ 10 User available
IRQ 11 User available
IRQ 12 Onboard mouse port (if present;
otherwise user available)
IRQ 13 Reserved, match coprocessor
IRQ 14 Primary IDE (if present;
otherwise user available)
IRQ 15 Secondary IDE (if present;
otherwise user available)
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System I/O Map
I/O Address (Hex) Size Description
0000-000F 16 bytes DMA controller
0020-0021 2 bytes Programmable Interrupt Control
(PIC)
0040-0043 4 bytes System timer
0060 1 byte Keyboard controller byte - Rest
IRQ
0061 1 byte System speaker
0064 1 byte Keyboard controller, CMD / STAT
byte
0070-0071 2 bytes System CMOS / Real Time Clock
0072-0073 2 bytes System CMOS
0080-008F 16 bytes DMA controller
0092 1 byte Fast A20 and PIC
00A0-00A1 2 bytes PIC