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Int 15 Fn DE17 - Desqview V2.26+ - "assertmap" - Get/set Mapping Context [Q]
AX = DE17h
BX = function
0000h get current mapping context without setting
nonzero set new mapping context to BX
Return: BX = mapping context in effect before call
Notes: mapping contexts determine conventional-memory addressability; setting
a mapping context ensures that the associated program and data areas
are in memory for access. Usable by drivers, TSRs and shared
programs.
caller need not be running under DESQview
this API call may be made from a hardware interrupt handler
See Also: AX=1016h,AX=1117h,AX=DE21h,INT 2F/AX=1685h
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