Specifications

Product Support Bulletin
Subject:
16MB of RAM and the Equity 386/20 Computer
Date: 8/17/89
Page: 1 of 1
PSB No: S-009
Originator:
Purpose:
The purpose of this bulletin is to explain a potential problem when installing
16MB of RAM using 16 1MB SIMM modules.
The SETUP program
versions 5.1 and 5.2 allow an expansion memory setting that causes the
following error to be displayed:
FC0000 6DDB 201 - Memory error
- Parity check 1
164 -
Memory size error
(Run SETUP in DIAGNOSTICS)
Setup Information:
When entering information into the SETUP program, use the following
values:
640K
Main
15104K Expansion
Memory Map:
Address
Range Size
000000 - 09FFFF
0 - 640K
640K
Use
RAM - Main
0A0000 - 0FFFFF
640K - 1 M
384K
Reserved
100000- FBFFFF
1M - 15.75M
15104K
RAM - Expansion
FC0000 - FFFFFF
15.75M - 16M
256K Reserved
Explanation:
The 384K of address space between 640K and 1M is reserved for system
use (including the SHADOW RAM feature).
The 256K address space
between 15.75M and 16M is also reserved for system use. The 640K and
15104K are combined into 15744K of total accessible RAM.