INT 2F - VGAsave v1.93 - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed BX = segment of resident code Program: VGAsave is a freeware VGA-specific, mouse-aware screenblanker by Bill Javurek Range: AH=C0h to AH=FFh, selected by scanning for a free multiplex number Note: the transient portion of VGAsave compares the first 38 bytes of the resident code (addressed through BX) against its own copy of the resident code to complete the installation check SeeAlso: INT 14/AX=AA01h,INT 2F/AH=93h Index: screen saver;VGAsave
INT 2F - AD-DOS - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed BX = 4144h ('AD') CX = 2D44h ('-D') DX = 4F53h ('OS') Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number SeeAlso: AX=C001h"AD-DOS",AX=C003h"AD-DOS",AX=C005h"AD-DOS",AX=C007h"AD-DOS" SeeAlso: AX=C009h"AD-DOS",AX=C020h"AD-DOS",INT 14/AX=AA01h Index: screen saver;AD-DOS
INT 2F - DIMWIT - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed ES:DI -> signature string "DIMDOS" or "DIMWIN" Program: DIMWIT is a freeware Windows-aware screen blanker by Larry Board Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number SeeAlso: AX=C000h"AD-DOS",AX=C001h"DIMWIT" Index: screen saver;DIMWIT
INT 2F U - TSENGP.COM - INSTALLATION CHECK AX = C000h Return: AL = status 00h not installed, OK to install FFh installed DS = segment of resident code Program: TSENGP.COM is a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. supplied by Compaq to fix an incompatibility between some applications and Tseng ET4000-based video adapters Range: AH=C0h to AH=FFh, selected automatically Note: the installation check is completed by comparing the first eleven bytes at DS:005Fh against the TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination.'s code (80h FCh 06h 74h 0Ah 80h FCh 07h 74h 05h EAh)