[Bug 15686] New: Microsoft Word 5.5 for DOS does not install; int 21h ah=41h not fully implemented

http://bugs.winehq.org/show_bug.cgi?id=15686

Summary: Microsoft Word 5.5 for DOS does not install; int 21h
                    ah=41h not fully implemented
           Product: Wine
           Version: 1.1.6
          Platform: Other
               URL: http://download.microsoft.com/download/word97win/Wd55_be
                    /97/WIN98/EN-US/Wd55_ben.exe
        OS/Version: other
            Status: NEW
          Keywords: download, Installer
          Severity: normal
          Priority: P2
         Component: dos
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

According to http://en.wikipedia.org/wiki/Microsoft_word#Word_1981_to_1989,
the full version of Microsoft Word 5.5 for DOS is available
for free download from Microsoft's servers.  The filename is Wd55_ben.exe
and the sha1sum is da7c939d6bd7b06d91d3abe6094bd6e424009089.

The app is delivered as a self-extracting zipfile.
Letting it unpack itself curiously unpacks everything
in the same directory, leading to multiple clashes.
Better to unpack it with unzip, then it puts things in
multiple directories with no clashes.

Running the unpacked SETUP.EXE fails with
SYS2090: The system is unable to load the program.
According to http://pages.videotron.com/mikereid/readme.txt,
this error means insufficient free memory.

+int21 shows
trace:int21:DOSVM_Int21Handler AX=4a0d BX=ffff CX=3456 DX=0000 SI=0000 DI=0000
DS=10cb ES=10cb EFL=000b0206
trace:int21:DOSVM_Int21Handler RESIZE MEMORY segment 10CB to 65535 paragraphs
trace:dosmem:DOSMEM_ResizeBlock (0x10cb0,ffff0h,FALSE)
trace:int21:DOSVM_Int21Handler failed, error 0
trace:int21:DOSVM_Int21Handler returning: AX=0008 BX=8f35 CX=3456 DX=0000
SI=0000 DI=0000 DS=10cb ES=10cb EFL=000b0207
...
trace:int21:DOSVM_Int21Handler AX=4a08 BX=8f35 CX=3456 DX=0000 SI=0000 DI=0000
DS=10cb ES=10cb EFL=000b0246
trace:int21:DOSVM_Int21Handler RESIZE MEMORY segment 10CB to 36661 paragraphs
trace:dosmem:DOSMEM_ResizeBlock (0x10cb0,8f350h,FALSE)
trace:int21:DOSVM_Int21Handler failed, error 0
trace:int21:DOSVM_Int21Handler returning: AX=0008 BX=08f3 CX=3456 DX=0000
SI=0000 DI=0000 DS=10cb ES=10cb EFL=000b0247

and then it outputs the SYS2090 message.  Evidently it tries to
resize a block of memory to the maximum possible size in the
DOS memory space (1MB, or 65535 paragraphs); DOS replies 
"sorry, you can only resize that to 36661 paragraphs"; the
app says "OK, mate, give me 36661 paragraphs"; and DOS 
says "Ha, ha, fooled you, you can't have that after all."
I'd abort if it were me, too.

Looking at winedos/int21.c:DOSVM_Int21Handler and 
winedos/dosmem.c:DOSMEM_ResizeBlock, it looks like the
resize functionality isn't yet implemented.