User's Manual

DIGITAL-LOGIC AG MSM855/HLV/B/B2 Detailed Manual V1.0A
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5.9.2. System I/O Map
5.9.2.1. Fixed IO Address Space
IO Address Size Target
00h-1Fh 32 DMA controller
20h-2Dh 14 Interrupt controller
2Eh-2Fh 2 LPC SIO
30h-3Dh 14 Interrupt controller
40h-43h 4 8254 compatible timer
4Eh-4Fh 2 LPC SIO
50h-53h 4 8254 compatible timer
60h-66h (even) 4 8254 compatible timer
61h-67h (odd) 4 NMI controller
70h-77h 8 RTC controller
80h-91h 18 DMA controller
92h 1 Reset controller
93h-9Fh 13 DMA controller
A0h-B1h 18 Interrupt controller
B2h-B3h 2 Power management
B4h-BDh 10 Interrupt controller
C0h-DFh 32 DMA controller
F0h 1 Depends on configuration
F8h-FFh 8 Reserved
170h-177h 8 IDE controller
1F0h-1F7h 8 IDE controller
376h 1 IDE controller
3F6h 1 IDE controller
5.9.2.2. Variable IO Address Space
The variable IO address space depends on the BIOS settings. The following ranges are with default setup
values loaded.
IO Address Size Target
000h-0FFh 256 Fixed IO address space
274h-277h 4 ISAPNP
279h-279h 1 ISAPNP
295h-296h 2 SuperIO
2F8h-2FFh 8 Serial port (COM2)
378h-37Fh 8 Printer port (LPT1)
3B0h-3BBh 12 Graphic controller
3C0h-3DFh 32 Graphic controller
3F0h-3F7h 8 Floppy controller
3F8h-3FFh 8 Serial port (COM1)