Note: This IBM PC BIOS API call is for DOS/Win16 personality only. Use Family API for portability.

Note: osFree Macro Library provides macros for most of functions

2022/03/13 05:41 · prokushev · 0 Comments

BIOS API

All registers saved on entry and restores on return

BIOS Interrupts

Interrupt vector Description Version
10H Video I/O 5150+
11H Equipment 5150+
12H Memory size 5150+
13H Diskette I/O 5150+
14H RS232 I/O 5150+
15H Cassette I/O 5150, 4860
16H Keyboard I/O 5150+
17H Printer I/O 5150+
18H ROM BASIC 5150+
19H Bootstrap 5150+
1AH Time and date 5150+
IBM PC BIOS API
Video I/O INT 10H: 00H, 01H, 02H, 03H, 05H, 06H, 07H, 08H, 09H, 0AH, 0BH, 0CH, 0DH, 0EH, 0FH
Hardware info INT 11H, INT 12H
Serial I/O INT 14H: 00H, 01H, 02H, 03H
Tape I/O INT 15H: 00H, 01H, 02H, 03H
Keyboard I/O INT 16H: 00H, 01H, 02H
Printer I/O INT 17H: 00H, 01H, 02H
Disk I/O INT 13H: 00H, 01H, 02H, 03H, 04H, 05H
Date and Time INT 1AH: 00H, 01H
2022/03/13 05:54 · prokushev · 0 Comments