en:docs:bios:api:int10:00

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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

Int 10H, AH=00H

Version

IBM 5150 and higher

Brief

Specify the display mode for the currently active display adapter

osFree Macro Library

Family API

Parameters

  • AH = 00h
  • AL = Mode

Return

  • AL = video mode flag (Phoenix, AMI BIOS)
    • 20h mode > 7
    • 30h modes 0-5 and 7
    • 3Fh mode 6
  • AL = CRT controller mode byte (Phoenix 386 BIOS v1.10)

Notes

  • IBM standard modes do not clear the screen if the high bit of AL is set (EGA or higher only)

Note