Message-Id: <199701112142.WAA16325@math.amu.edu.pl> Comments: Authenticated sender is From: "Mark Habersack" Organization: What? (Poznan, Poland) To: Serge Golovin Date: Sat, 11 Jan 1997 22:45:58 +0100 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: DOS application under Windows Reply-to: grendel AT ananke DOT amu DOT edu DOT pl CC: djgpp AT delorie DOT com (DJGPP Mailing List) Once upon a time (on 11 Jan 97 at 16:14) Serge Golovin said: > > Don't remember it off the top of my head, but browse Ralph Brown's > > Interrupt list for the Int2Fh entries. You will find there all you > > need - detection of windoze and all the call-backs DOS application > > can install using the Int2Fh interface. > It would be helpful for you to get Andrew Schulman's "Unauthorized > Windows 95" too. -- SerGo, aka RES There's no need to do that in this case - Ralph's Interrupt List has all the answers: -------------------- Interrupt Helper v1.0 W-2F1684BX0750 INT 2F - MS Windows - VSWITCHD - GET DEVICE API ENTRY POINT AX = 1684h BX = 0750h (virtual device ID for VSWITCHD device) (see #1921) ES:DI = 0000h:0000h Return: ES:DI -> VxD API entry point (see #1935) 0000h:0000h if the VxD does not support an API (Table 1935) Call VSWITCHD entry point with: AX = function 0000h toggle windowed mode (simulate Alt-Enter keypress) Return: nothing 0001h get windowed mode Return: CF clear if VM is windowed CF set if VM is full-screen ---------------- INT 2F - MS Windows - WINDOWS ENHANCED MODE INSTALLATION CHECK AX = 1600h Return: AL = status 00h neither Windows 3.x enhanced mode nor Windows/386 2.x running 01h Windows/386 2.x running 80h XMS version 1 driver installed (neither Windows 3.x enhanced mode nor Windows/386 2.x running) (obsolete--see note) FFh Windows/386 2.x running AL = anything else AL = Windows major version number >= 3 AH = Windows minor version number Notes: INT 2F/AH=16h comprises an API for non-Windows programs (DOS device drivers, TSRs, and applications) to cooperate with multitasking Windows/386 2.x and Windows 3.x and higher enhanced mode. Certain calls are also supported in the Microsoft 80286 DOS extender in Windows standard mode this function served as the installation check and AX=1610h served to get the driver entry point for XMS version 1, which is now obsolete. Use AX=4300h and AX=4310h instead SeeAlso: AX=160Ah,AX=1610h,AX=4300h,AX=4680h Index: installation check;XMS version 1 ================================================= How much longer can I howl into this wind? How much longer can I cry like this? A thousand wasted hours a day just to feel my heart for a second... A thousand hours just thrown away Just to feel my heart for a second ---- Visit http://ananke.amu.edu.pl/~grendel