Microsoft KB Archive/25316

Cordata PPC 400, 640K RAM

PSS ID Number: Q25316 Article last modified on 11-02-1994

4.00 5.00 5.50 6.00

MS-DOS

= SUMMARY =

Microsoft Word will not run on a Corona Data Systems Cordata PPC 400 512K computer that has been modified with an Apparat RAM board. The Cordata’s mapping of the IBM graphics memory to the top 16K of RAM is limited to systems with 512K or less of RAM installed. Therefore, if more memory is installed on an expansion card to make the total memory exceed 512K, IBM graphics memory is still mapped to the top 16K of the 512K of RAM on the main board. Furthermore, this memory is not protected from DOS or any other application program.

Word will overwrite the IBM graphics memory in RAM, resulting in a system crash. To run Word, remove the Apparat board and operate with the Cordata’s original 512K of RAM. Page 2-4a of the Cordata PPC-400 manual contains a more complete discussion of this situation.

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================================================================ Copyright Microsoft Corporation 1994.