Welcome to Sudley Place Software where you can find some tools
offered for your use for free. Note that in some cases,
a tool may be free for non-commercial use only; consult the documentation
for each tool for specific information.
The first tool is a Protected Mode debugger called 386SWAT.
This tool installs as a DOS device driver, and can debug almost any DOS
Real Mode, Virtual Mode, and Protected Mode (VCPI and DPMI) program as
well as the Windows 3.x and Win95/98 kernel, VxDs, and user-level applications.
It has been in development since 1988. For more details, see the
documentation, or maybe you'd just like
to download
the program.
386SWAT can now can display debugging output
on a secondary PCI VGA adapter as well as on a monochrome adapter hidden
behind an AGP controller.
The source code for 386SWAT may be viewed as a web page,
or accessed directly by a Subversion (SVN) client
if you have one on your local machine.
The second tool is a linker called QLINK
written specifically to link 386SWAT because none of the available linkers
could do the job (in particular handle USE32
segments greater than 64KB in length).
The source code for QLINK may be viewed as a web page,
or accessed directly by a Subversion (SVN) client
if you have one on your local machine.
The third tool 
is a
standalone DPMI 1.0 Host called DPMIONE.
This tool provides support for the DPMI 1.0 Specification and can be used
in conjunction with QLINK.
The source code for DPMIONE may be viewed as a web page,
or accessed directly by a Subversion (SVN) client
if you have one on your local machine.
Various miscellaneous tools are also available for download,
including SMBIOSW, a Windows
version of the original DOS
SMBIOS utility (now called SMBIOSD).
SMBIOSD and SMBIOSW now support version 2.4 of the SMBIOS
Specification.
For Apache Web Server users, there's a discussion of how
Server Side
Include paths and Piped Error Logs
work.
For System Level programmers of Intel 386 and later CPUs, there's a
discussion
on How to Use Expand Down Stacks, as well as a discussion of how to program the
Transition from Protected Mode to Real Mode.
For game enthusiasts, there's an enhanced version of the popular Windows
game Minesweeper. This program is ideal for players who
want to become experts. I call it MySweeper,
the grammatically correct version.
For APL enthusiasts in the crowd, there's a page
on various APL-related projects.
For Polyomino enthusiasts, there's a program Visomino
(and its description) for solving various
packing problems using a clever backtracking algorithm by D. E. Knuth.
For Mozilla Thunderbird users, there's a discussion on how to
Share an Address Book using an LDAP server.
For customers of WestHost ISP, there's
a page devoted to how to install various
applications on their servers.
