Windows95 aneb kam se podel DOS?

From: Petr Snajdr <mysnajdr@VSZBR.CZ>
Subject: Windows95 aneb kam se podel DOS?
Date: Mon, 22 Jan 1996 16:45:14 +0100

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Dobry den,
pokud vas zajima kam se ve win95 podel DOS...mozna vas zaujme:
 
http://www.ora.com:80/gnn/bus/ora/win/update/win32psp.html
 
WIN32PSP.C and WIN32PSP.EXE -- A Win32 program that accesses its own
real-mode DOS PSP.
 
 
Yes, you read right: (yes, all Win32 processes in Win95 must have a DOS
Program Segment Prefix, located down in conventional memory!. (This is why
running the DOSMEM program can prevent you from running any other Windows
programs, until you free up some DOS memory.) WIN32PSP uses the versatile
undocumented VxDCall Win32 API to make DPMI INT 31h calls and DOS INT 21h
calls, which normally are not allowed in a Win32 program. The program also
shows that PSPs are slightly larger in Win95 than in previous versions of
DOS/Windows. Sample output (notice that PSPs in Win95 are 120h (288)
bytes, not 100h (256) bytes):  Win32 app's PSP (prot mode): 0C67h PSP base
address: 0003A080h PSP length: 0120h bytes JFT @ 3A080018h (20 files)
 
S pozdravem
Petr Snajdr

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