Category: remote control/file access
INT 2F - INTERLNK - INSTALLATION CHECK
AX = 5600h
DX = magic value FFFFh
BL = instance number (00h = any, 01h = first loaded, etc.)
(BH = 00h and CX = 0000h, see note)
Return: AL = FFh if installed
BL = instance number
CX = version number (CL = major, CH = minor)
DX = resident CS of driver, DX:0000h -> header (see #02845)
Notes: INTERLNK was derived from Sewell Development Corporation's FASTLYNX.
Some Microsoft software explicitly clears the BH and CX registers
before calling this function.
BUG: reportedly, the MS-DOS INTERSRV program (though not INTERLNK) causes
serious FAT corruption and data loss when run under Novell DOS 7.
INTERSRV apparently checks for DR-DOS by testing the "OS"
environment variable for the value "DRDOS", which is no longer
correct for PalmDOS, Novell DOS, or OpenDOS. A workaround may be
to explicitly set the OS variable to "DRDOS".
SeeAlso: AX=5601h,AX=5602h,INT 60/AX=0000h