BIOS Technical Reference
Blinker 4.0 Online Reference
CA-Clipper 5.3  Guide To CA-Clipper
CA-Clipper 5.3  Error Messages
CA-Clipper 5.3  Technical Reference
CA-Clipper 5.3  Utilities
Watcom C/C++ User's Guide
Watcom C Library Reference
DEBUG
Dos Protected Mode Interface (DPMI)
CA-Clipper/ExoSpace 1.0g
Hardware
I/O Ports
Ralf Brown
Turbo Basic
VGA registers
Watcom Debugger Guide
iAPx86
XMS Specification  (version 3.0)