EPOX EP-6VBA Specifications download pdf (Page 57)

Appendix

EP-6VBA

A-1

Appendix A

A-1 MEMORY MAP

Address Range Size Description

[00000-7FFFF] 512K Conventional memory

[80000-9FBFF] 127K Extended Conventional memory

[9FC00-9FFFF] 1K Extended BIOS data area if PS/2 mouse is

installed

[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

adaptor

[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)

A-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)

[0F0-0FF] MATH COPROCESSOR.

[1F0-1F8 ] HARD DISK controller.

[278-27F] PARALLEL port 2.

[2B0-2DF] GRAPHICS adapter controller.

[2F8-2FF] SERIAL port 2.

[360-36F] NETWORK ports.

[378-37F] PARALLEL port 1.

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EPOX EP-6VBA Specifications Page 57