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BIOS SPECIFICATION
6-8
The configuration index/data I/O ports are 2Eh/2Fh. And only Parallel Port function is enabled by BIOS.
The Parallel Port Mode can be adjusted in BIOS SETUP MENU during POST. Table 4.4 shows all
modes supported by BIOS.
Table 4.4 Parallel Port Mode supported by BIOS
Parallel Port Mode
1 SPP/Bi-Directional
2 EPP/SPP
3 ECP
4 ECP/EPP
4.5 RESOURCE ALLOCATION
The system resources are allocated as follows at POST.
Table 4-2 System Resource Allocation
Device Connect Type Resources
I/O IRQ DMA Memory
DMA Controller Static 00~0F, 81~8F,
C0~DF
- DMA4 -
Interrupt Controller Static 20~21, A0~A1 - - -
System Timer Static 40~43 IRQ0 - -
RTC Static 70~71 IRQ8 - -
ISA Bus Static - - - -
System Speaker Static 61 - - -
System Board Static - - - E0000~FFFFF
FED14000~FE
D19FFF
PnP Mother Board Static 80 - - -
Keyboard Controller Static 60, 62, 64, 66 IRQ1 - -
Math Coprocessor Static F0~FF IRQ13 - -
Touch Pad Static IRQ12
IDE Controller Static 1F0~1F7, 3F6 IRQ14 - -
USB Host Controller 1 Dynamic E880~E89F IRQ23 - -
USB Host Controller 2 Dynamic E800~E81F IRQ19 - -
USB Host Controller 3 Dynamic E480~E49F IRQ18 - -
USB Host Controller 4 Dynamic E400~E41F IRQ16 - -
USB 2.0 Host Controller Dynamic IRQ23 - FEB3BC00~
FEB3BFFF
High Definition Audio
Controller
Dynamic IRQ16 - FEB3C000~
FEB3FFFF
SMBus Static 400~041F IRQ5
Video Controller Static 3B0~3BB,
3C0~3DF
D000-D0FF
IRQ16 - D0000000~
D7FFFFFF
FEAF0000~
FEAFFFFF
000A0000~
000BFFFF
CardBus Controller Dynamic 3E0~3E1
FE00~FEFF
FD00~FDFF
IRQ17 - FFEFF000~
FFEFFFFF
FFEFE000~
FFEFFFFF
F9F00000~
FDEFFFFF
DF000~DFFFF
1394 Controller Dynamic IRQ18 FE8FF800~
FE8FFFFF