Section 5. System Bios - IBM AT 5170 Technical Reference

SECTION 5. SYSTEM BIOS
Contents
System BIOS Usage ...•..............••.•......... 5-3
Parameter Passing ........................... 5-4
Vectors with Special Meanings ................. 5-6
Other Read/Write Memory Usage .............. 5-8
BIOS Programming Hints .................... 5-10
Adapters with System-Accessible ROM Modules .. 5-12
Additional System Board ROM Modules ......... 5-13
Keyboard Encoding and Usage ••.........••........•. 5-13
Character Codes ........................... 5-14
Extended Functions ......................... 5-18
Shift States ................................ 5-19
Special Handling ........................... 5-21
Quick Reference ......••................•........ 5-24
System BIOS 5-1