31 lines
1.3 KiB
Plaintext
31 lines
1.3 KiB
Plaintext
=============================================================================
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AST RESEARCH, INC. TECHNICAL BULLETIN #0736 01-21-92
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=============================================================================
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PREMIUM 486/25 AND IMSI PET MOUSE
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PROBLEM: When using a Pet Mouse, a PS/2 compatible mouse manufactured
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by Imsi on a Premium 486-25 the following errors will occur:
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- The system will lock up with the Pet Mouse plugged into the
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mouse port (motherboard part number 202360-001).
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- If the system passes its POST test the Pet Mouse will be
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recognized as a serial mouse connect to COM1: IRQ: 4 I/O:
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3F8, instead of a PS/2 mouse.
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CAUSE: The cause of this problem is the keyboard controller revision
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1.01, which is located at U15.
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SYSTEM
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AFFECTED: All systems that have motherboard part number 202360-001.
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SOLUTION: This problem is resolved by replacing the revision 1.01
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keyboard controller with revision 1.02. This keyboard
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controller (part number 237002-002) can be ordered through
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AST's Product Support Department.
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