DOS/32 Advanced DOS Extender - Programmer's Reference

3.05 - DOS function 1Fh - Get Default Drive Parameter Block Address


In: AH = 1Fh

if successful:
AL = 00h
DS:EBX = pointer to DPB buffer

if failed:
AL = 0FFh (invalid drive)


a) The selector returned in DS register will be zero selector, ie readable/writeable data selector with Base=0. This is an internal to DOS/32 Advanced selector which may NOT be freed or modified under any circumstances.


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