Appendix; Appendix A Memory Map; I/O Map - EPOX EP-3VBA2 Manual

EP-3VBA2/6VBA2
A-1 MEMORY MAP
Address Range
[00000-7FFFF]
[80000-9FBFF]
[9FC00-9FFFF]
[A0000-C7FFF]
[C8000-DFFFF]
[E0000-EEFFF]
[EF000-EFFFF]
[F0000-F7FFF]
[F8000-FCFFF]
[FD000-FDFFF]
[FE000-FFFFF]
A-2 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]
[2B0-2DF]
Size Description
512K Conventional memory
127K Extended Conventional memory
1K Extended BIOS data area if PS/2 mouse is
installed
160K Available for Hi DOS memory
96K Available for Hi DOS memory and adapter
ROMs
60K Available for UMB
4K Video service routine for Monochrome &
CGA adaptor
32K BIOS CMOS setup utility
20K BIOS runtime service routine (2)
4K Plug and Play ESCD data area
8K BIOS runtime service routine (1)
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.
GRAPHICS adapter controller.

Appendix

Appendix A
A-1