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5.2. I/O & MEMORY MAP
MEMORY MAP:
[0000000-009FFFF]
[00A0000-00BFFFF]
[00C0000-00DFFFF]
[00E0000-00EFFFF]
[00F0000-00FFFFF]
[0100000-BFFFFFF]
I/O MAP:
[000-01F]
[020-021]
[022-023]
[040-05F]
[060-06F]
[070-07F]
[080-09F]
[0A0-0BF]
[0C0-0DF]
[0F0-0FF]
[1F0-1F8]
[278-27F]
System memory used by DOS and application program.
Display buffer memory for VGA/ EGA/CGA/MONOCHROME adapter.
Reserved for I/O device BIOS ROM or RAM buffer.
Reserved for PCI device ROM.
System BIOS ROM.
System extension memory.
DMA controller.(Master)
INTERRUPT controller.(Master)
CHIPSET control registers I/O ports.
TIMER control registers.
KEYBOARD interface controller.(8042)
RTC ports & CMOS I/O ports.
DMA register.
INTERRUPT controller.(Slave)
DMA controller.(Slave)
MATH COPROCESSOR
HARD DISK controller.
PARALLEL port-2.
5-3
AT Technical Information
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