http://upx.sourceforge.net/ - http://upx.sourceforge.net/
The Ultimate Packer for eXecutables is a portable, extendable, high-performance executable packer for several different executable formats. Freeware. |
http://www.sudleyplace.com/swat/ - http://www.sudleyplace.com/swat/
A Protected Mode Debugger which provides debugging services to real mode, protected mode, virtual 8086 mode programs, DPMI and VCPI clients, and Win 3.1x and Win95/98 programs under any memory manager while occupying only a few kilobytes of low DOS memory. |
Programming MS-DOS with Power - http://www.frontiernet.net/~fys/index.htm
Information on most every aspect of DOS programming. |
Ralf Brown's Interrupt List (USA Midwest mirror) - http://ctyme.com/rbrown.htm
A list of interrupts used on the Intel x86 architecture and their meaning with over 9000 linked pages and 350 indexes greatly ease the process of searching. |