Device Mapping
Device Mapping
Digital PRIORIS HX MP Server
Digital PRIORIS HX MP Server
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MCS Logistics Engineering - Nijmegen
MCS Logistics Engineering - Nijmegen
P
R
I
O
R
I
S
H
X
M
P
CPU Memory Address Map
Address Range
Function
Size
00000 to 7FFFF
Main memory
512 KB
80000 to 9FFFF
Main/PCI/EISA/ISA memory
128 KB
A0000 to BFFFF
PCI/EISA/ISA video buffer memory
128 KB
C0000 to C7FFF
Video memory BIOS
32 KB
C8000 to DFFFF
PCI/EISA/ISA expansion board BIOS and buffer memory
96 KB
E0000 to E7FFF
EISA/ISA/PCI adapter RAM after POST completesUsed by BIOS
Setup during POST
32 KB
E8000 to EFFFF
EISA/ISA and buffer memory
32 KB
F0000 to FFFFF
System BIOS memory
64 MB
DMA Channel Assignment
Channel
Controller
Function
0
1
Refresh
1
1
Not Used
2
1
Diskette controller (if enabled)
3
1
Not Used
4
2
Cascade DMA
5
2
Not Used
6
2
Not Used
7
2
Not Used
I/O Address Map
Range (hexadecimal)
Function
060 to 064
Keyboard/mouse controller
0F0 to 0FF
Math co-processor
1F0 to 1F7
IDE controller (if enabled)
278 to 27F
LPT2 (if enabled)
2E8
COM4 (if enabled)
2F8
COM2 (if enabled)
378 to 37F
LPT1 (if enabled)
3BC to 3BE
LPT3 (if enabled)
3EB
COM3 (if enabled)
3F0 to 3F7
Diskette controller (if enabled)
3F8
COM1 (if enabled)
