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AH = 61h
BP = 6467h ("dg")
AL = function
00h list (i.e. get)
01h add
02h delete
BX = drive number
CX = size of buffer
SI = type (0002h JOIN, 0003h SUBST)
ES:DI -> buffer
Return:
CF clear if successful
AX = 0000h
ES:DI buffer filled, if appropriate
CF set on error
AX = error code
Notes: Used by JOIN and SUBST to communicate with the OS/2 file system. For function 00h (list), the ES:DI buffer is filled with the ASCIZ JOIN/SUBST path or an empty string if the drive is not JOINed/SUBSTed. Also supported by OS/2 v2.0+ Virtual DOS Machines
Category: Other Operating Systems - Int 21h - O
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