x86/MS-DOS Interrupt List, Release 56 A 
Comprehensive listing of interrupt calls, 
both documented and undocumented. Contains 
over 8500 entries (plus nearly 3800 tables) 
in inter56a to inter56d, utility programs and 
viewers in inter56e, WinHelp utilities in 
inter56f, and non-WinHelp hypertext 
converters in inter56g.