Int 21/AX=4404h

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Stacker - GET DEVICE DRIVER ADDRESS AND SET VOLUME NUMBER

AX = 4404h
BL = drive number (00h = default, 01h = A:, etc.)
CX = 0004h
DS:DX -> DWORD buffer to receive device driver address

Return:
Buffer filled with pointer into Stacker device driver (see #02550): driver + 19h if Stacker Anywhere controls this drive driver + 1Ah if Stacker controls this drive unchanged else

Notes: In addition to returning the address of the Stacker device driver, this call also sets the volume number at offset 58h in the device driver (see #02550 at INT 25/AX=CDCDh). Stacker Anywhere does not link its built-in device driver into the standard device driver chain, but it can be found via CDS/DPB. This call can be used as an installation check for all versions of Stacker and Stacker Anywhere to avoid the INT 25 call

See Also: AX=4408h - AX=440Eh - AH=52h - INT 25/AX=CDCDh<

Category: File/Disk Compression - Int 21h - S

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