HELPPC is a quick reference utility for the intermediate to advanced programmer.

Topics include:

• BIOS interrupts
• DOS interrupts and DOS functions
• EMS and Mouse functions
• BIOS and DOS data structures
• diagnostic codes
• DOS commands
• 80x86 assembler instructions
• standard and vendor specific C functions
• various hardware specifications

HelpPC is available for online browsing in HTML form. You can also download the original archive, which the contains the entire database in text format, viewable with the stand-alone DOS utility or the context-sensitive TSR.