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INT 0x10 - 0x0f - Get Video state


reg value descr
AH 0x0f


reg descr
AH number of screen columns
AL mode currently set
BH current display page

Notes & Comments

  • video modes greater than 13h on EGA, MCGA and VGA indicate INT 10,0 was called with the high bit of the mode (AL) set to 1, meaning the display does not need cleared
  • function returns byte value at 40:49; On EGA, MCGA and VGA bit 7 of register AL is determined by bit 7 of BIOS Data Area byte 40:87. This bit is usually set by INT 10,0 with bit 7 of the requested mode (in AL) set to 1


back2root/ibm-pc-ms-dos/interrupts/int_10/int_10_0f.txt · Dernière modification : 2023/02/19 15:32 de frater