Memory And I/O Usage; Introduction; Memory Usage - Mitsubishi Electric LS Pro Hardware Technical Reference

Memory and I/O Usage

5.1

INTRODUCTION

This section describes Memory and I/O space layout, and details the usage of the
registers in I/O space.
5.2

MEMORY USAGE

The memory map below details the addressing of system board memory.
Note
The SETUP utility allows BIOS shadowing to be enabled or disabled. If shadowing is enabled
the BIOS on the system board is copied into RAM where it can be accessed faster.
A more detailed description of the region between 768k and 1M (0C0000h and
100000h) is given over.
5/2 LS PRO HARDWARE TECHNICAL REFERENCE
16M
SYSTEM BOARD ROM
16M-128k
EXPANSION RAM
1M
BIOS
960k
BUS MEMORY
896k
768k
VIDEO RAM
640k
SYSTEM BOARD RAM
0
FFFFFFh
FE0000h
100000h
0F0000h
0E0000h
0C0000h
0A0000h
000000h