Function 19h Get Current Disk Drive Return designation of current default disk drive entry AH 19h return AL current default drive (0=A, 1=B,etc.) note Some other DOS functions use 0 for default, 1=A, 2=B, etc.
Function 19h Get Current Disk Drive
Return designation of current default disk drive
entry AH 19h
return AL current default drive (0=A, 1=B,etc.)
note Some other DOS functions use 0 for default, 1=A, 2=B, etc.