Intel 810 Main Board
69
A0000-C7FFF
160K Available for hi DOS memory
C8000-DFFFF
96K
Available for hi DOS memory and adapter
ROMs
E0000-EEFFF
60K
Available for UMB
EF000-EFFFF
4K
Video service routine for monochrome &
CGA adapter
F0000-F7FFF
32K
BIOS CMOS setup utility
F8000-FCFFF
20K
BIOS runtime service routine (2)
FD000-FDFFF
4K
Plug and play ESCD data area
FE000-FFFFF
8K
BIOS runtime service routine (1)
5-2 I/O Map
000-01F
DMA controller (master)
020-021
Interrupt controller (master)
022-023
Chipset control registers. I/O ports
040-05F
Timer control registers
060-06F
Keyboard interface controller (8042)
070-07F
RTC ports & CMOS I/O ports
080-09F
DMA register
0A0-0BF
Interrupt controller (slave)
0C0-0DF
DMA controller (slave)