Int 13/AH=18h/CX=D2C9h

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XDF.COM - API

AH = 18h
CX = D2C9h ("R"+80h, "I"+80h = Roger Ivey)
DX = 0000h
BX = function
0000h installation check

Return:
AH = 0Ch CX = 7269h ("ri" = Roger Ivey) ES = segment of driver CF set 2F64h ("/d") disable the driver

Return:
AH = 0Ch ES:BX = pointer to activation flag (it is set to 0: set it to 1 to enable the driver again) CX = 7269h CF set 2F75h ("/u") unload the driver (restore interrupts & free memory)

Return:
AH = 0Ch DL = 55h ("U") if successful = 00h if fails CX = 7269h ES = segment of driver CF set AL, BX, DH, and DI destroyed

Program: XDF is a TSR provided with PC-DOS 7.0 to support XDF 1.84M disks, developed by Roger D. Ivey

Note: After disabling or enabling the driver, a disk change must be performed or simulated to reset the driver.

Category: Disk I/O Enhancements - Int 13h - X

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