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