Int 4A C - System - User Alarm Handler
Int 4A - Z100 - Slave 8259 - S100 Vectored Line 2
Int 4A - Tandy 2000 - Print Screen
Int 4A - Acorn Bbc Master 512 - "osword" - Misc Functions Using Control Blo
Int 4A Fn 00 - Ti Professional Pc - Keyboard - Get Keypress
Int 4A Fn 01 - Ti Professional Pc - Keyboard - Get Keyboard Status
Int 4A Fn 02 - Ti Professional Pc - Keyboard - Get Keyboard Mode
Int 4A Fn 03 - Ti Professional Pc - Keyboard - Flush Keyboard Buffer
Int 4A Fn 04 - Ti Professional Pc - Keyboard - Send Command To Keyboard
Int 4A Fn 05 - Ti Professional Pc - Keyboard - Insert Character Into Keyboa