29 lines
1.2 KiB
Plaintext
29 lines
1.2 KiB
Plaintext
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AST RESEARCH, INC. TECHNICAL BULLETIN #0627 05/31/90
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=============================================================================
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INCOMPATIBLE DRAMS FOR RAMPAGEPLUS/286
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Memory errors in a system which can be attributed to a RampagePlus/286 (part
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number 202349-001) being present may actually be caused by the use of certain
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manufacturers DRAM chips on the SIMMS present on the board.
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SIMMS which are used to upgrade memory on the RampagePlus/286 have AST part
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numbers 202279-002, 202280-002, and 202320-002. The DRAM chips which are
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incompatible with the RampagePlus/286 are manufactured by Motorola and
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Toshiba. The memory chips are of the 256KX4 type (three IC's present on the
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SIMMS).
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If memory errors or system lock-ups are being experienced, remove all SIMMS
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containing these DRAM chips and substitute with other SIMMS. Other
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manufacturers DRAM chips approved for the RampagePlus/286 are:
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Mitsubishi M5M44256AP-10
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NEC UPD4242556C-10
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OKI MSM514256-10RS
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TI TMS44C256-10N
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