[comp.sys.ibm.pc] PS/2 Extended BIOS Data Area

ray@philmtl.philips.ca (Raymond Dunn) (09/18/89)

In article <251419E0.1024@maccs.dcss.mcmaster.ca> cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) writes:
>...
>[On a PS/2] DOS reports 639K conventional memory
>I find 640K
>
>Any ideas why?

This 1K of memory is grabbed from the top of the available memory by the PS/2
ABIOS as workspace, and is know as the Extended BIOS Data Area.

Its segment address can be got by calling INT 15 function C1.
-- 
Ray Dunn.                    | UUCP: ray@philmt.philips.ca
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