Int 21/AX=6C01h

OS/2 v2.0 - DosOpen2

AX = 6C01h
BL = open mode as in AL for normal open (see also AH=3Dh)
bit 7:
Inheritance
bits 4-6:
Sharing mode
bit 3 reserved
bits 0-2:
Access mode.
BH = flags
bit 6 = auto commit on every write (see also AH=68h)
bit 5 = return error rather than doing INT 24h.
CX = create attribute (see #01769).
DL = action if file exists/does not exist (see #01770).
DH = 00h (reserved).
DS:SI -> ASCIZ file name.
ES:DI -> EAOP structure

Return:
CF set on error
AX = error code (see #01680 at AH=59h/BX=0000h)
CF clear if successful
AX = file handle
CX = status (see #01768)

Note: This function is virtually identical to AX=6C00h, but supports OS/2's extended attributes

See Also: AX=5704h - AX=6C00h - AH=6Fh"OS/2"

Category: Other Operating Systems - Int 21h - O

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