Motherboard resources | |
Intel® 82801DB/DBM SMBus controller | |
ATI Technologies Inc. Rage XL PCI | |
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Intel® 82540EM based network connection #2 | |
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Intel® 82540EM based network connection | |
Intel® PRO/100 VE network connection | |
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Intel® 82801DB/DBM USB universal host controller - 24C4 | |
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Intel® 82801DB/DBM USB universal host controller - 24C2 | |
Intel® 82801DB Ultra ATA Storage controller - 24CB | |
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B.6 Interrupt Assignments
Table B.6: Interrupt assignments
Interrupt# | Interrupt source |
IRQ 0 (ISA) | System timer |
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IRQ 1 (ISA) | Standard |
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IRQ 3 (ISA) | Communications port (COM2) |
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IRQ 4 (ISA) | Communications port (COM1) |
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IRQ 5 (ISA) | |
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IRQ 8 (ISA) | System CMOS / real time clock |
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IRQ 9 (ISA) | Microsoft |
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IRQ 12 (ISA) | PS/2 compatible mouse |
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IRQ 13 (ISA) | Numeric data processor |
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IRQ 14 (ISA) | Primary IDE channel |
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IRQ 15 (ISA) | Secondary IDE channel |
B.7 1st MB Memory Map
Table B.7: 1st MB memory map
Address range (Hex) | Device |
F000h - FFFFh | System ROM |
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CC00h - EFFFh | Unused |
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CA00h - CBFFh | Used |
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C000h - C9FFh | Expansion ROM |
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B800h - BFFFh | CGA/EGA/VGA text |
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B000h - B7FFh | Unused |
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A000h - AFFFh | EGA/VGA graphics |
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0000h - 9FFFh | Base memory. |
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75 | ChapterB |