26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
=============================================================================
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AST RESEARCH, INC. TECHNICAL BULLETIN #0643 11-06-90
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=============================================================================
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RAMPAGEPLUS/286 AND ZENITH COMPUTERS
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The RampagePlus/286 (both part numbers 202247-XXX and 202349-XXX)
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does not operate reliably when installed in Zenith 80286-based computer
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systems. Parity errors are generated by memory installed on the Rampage
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board, either at the time of system boot up, or during the running of
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an application.
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This incompatibility exists as a result of the method by which the Zenith
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system performs memory addressing. The Zenith implementation of memory
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read/write cycles does not allow enough time for data from the Rampage memory
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to be stable, thus the parity errors.
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Any hardware change made to the RampagePlus/286 to resolve this
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incompatibility would prevent the board from operating in AST, IBM or IBM-
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compatible systems. Therefore, Zenith should be contacted directly for a
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resolution.
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