39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
=============================================================================
|
||
|
||
AST RESEARCH, INC. TECHNICAL BULLETIN #0641 11-08-90
|
||
|
||
=============================================================================
|
||
|
||
|
||
NEW 386SX/16 PROCESSOR BOARD
|
||
|
||
|
||
The following information summarizes a compatibility problem with the new
|
||
386SX/16 processor board (part number 202380-001) and Cupid motherboards.
|
||
This new board replaces the original 386SX/16 processor board (part number
|
||
202337-001) and will be shipped with the Cupid enhanced motherboard in all
|
||
Premium 386SX/16 systems.
|
||
|
||
PROBLEM:
|
||
|
||
The new 386SX/16 processor board (part number 202380-001) is not compatible
|
||
with common Cupid motherboards using BIOS v1.01. System lock-ups occur when
|
||
attempting to change the processor speed. The problem occurs when using
|
||
either the keyboard method <Ctrl> <Alt> <Up Arrow> or the SPEED.COM program.
|
||
Lock-ups also occur during the processor speed change test when running the
|
||
confidence tests.
|
||
|
||
RESOLUTION:
|
||
|
||
In order to resolve the problem, a BIOS upgrade (from version 1.10 to 1.20)
|
||
on the Cupid motherboard is necessary. This can be accomplished by using a
|
||
Cupid BIOS upgrade kit (part number 500775-001).
|
||
|
||
Listed below are the part numbers for the motherboards which require BIOS
|
||
upgrades:
|
||
|
||
202356-001 rev F 202273-001 rev N
|
||
202356-002 rev D 202273-002 rev J
|
||
202356-003 rev D 202273-003 rev F
|
||
202356-004 rev D
|
||
|