INT 2F - DOS 5+ DOSKEY - INSTALLATION CHECK AX = 4800h Return: AL = nonzero if installed (DOS 5.0 and 6.0 return AX=AA02h, Novell DOS 7 returns AX=EDFFh) ES = segment of DOSKEY resident portion DX = ??? (Novell DOS only; 02E6h for shipped v0.01) Notes: DOSKEY chains if AL is not 00h or 10h on entry this function is supported by Novell DOS 7 DOSKEY SeeAlso: AX=4800h"PCED",AX=4810h
INT 2F - PCED v2.1 - INSTALLATION CHECK AX = 4800h Return: AX = AACDh if installed ES = segment of PCED kernel (PCED has multiple code segments) Program: PCED v2.1 is a command line editor/history/macro facility by Cove Software. It is the commercial version of the freeware CED. Notes: DOSKEY also responds to this call if installed, returning AX=AA02h. unlike DOSKEY, PCED does *not* chain if AL contains an unsupported function code. It IRETs with all registers intact.