4. CPU Card Resources
SPI-8150-LVA, SPI-8151-LVA
35
4.
CPU Card Resources
4.1 Interrupters
Interrupters
IRQ# System Resources
NMI I/O Channel check
0 Reserved(interval Timer)
1 Reserved (Keyboard Controller)
2 Reserved (cascade interrupt from slave PIC)
3COM2*
4COM1*
5 LPT2(Plug and Play option)
6 FDD controller
7 LPT1*
8 Real Time Clock
9 User available
10 User available
11 User available
12 Reserved (PS/2 mouse port)
13 Reserved (math Processor)
14 Primary IDE (if present, else user available)
15 Secondary IDE(if present, else user available)
* Default, but can be changed to another IRQ
4.2 Memory Map
Compatibility Area
Address Range (h) Size Description
100000 - 511MB Extended Memory
E8000 - FFFFF 96KB System BIOS
E0000 - E7FFF 32KB System BIOS(Available as UMB)
CC000 - DFFFF 80KB Available high DOS memory(Open to ISA bus)
A0000 - CBFFF 176KB Video memory and BIOS
00000 - 9FFFF 640KB Conventional memory
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