INT 10,0 - Set Video Mode

AH = 00

AL = 00 40x25 B/W text (CGA,EGA,MCGA,VGA)

= 01 40x25 16 color text (CGA,EGA,MCGA,VGA)

= 02 80x25 16 shades of gray text (CGA,EGA,MCGA,VGA)

= 03 80x25 16 color text (CGA,EGA,MCGA,VGA)

= 04 320x200 4 color graphics (CGA,EGA,MCGA,VGA)

= 05 320x200 4 color graphics (CGA,EGA,MCGA,VGA)

= 06 640x200 B/W graphics (CGA,EGA,MCGA,VGA)

= 07 80x25 Monochrome text (MDA,HERC,EGA,VGA)

= 08 160x200 16 color graphics (PCjr)

= 09 320x200 16 color graphics (PCjr)

= 0A 640x200 4 color graphics (PCjr)

= 0B Reserved (EGA BIOS function 11)

= 0C Reserved (EGA BIOS function 11)

= 0D 320x200 16 color graphics (EGA,VGA)

= 0E 640x200 16 color graphics (EGA,VGA)

= 0F 640x350 Monochrome graphics (EGA,VGA)

= 10 640x350 16 color graphics (EGA or VGA with 128K)

640x350 4 color graphics (64K EGA)

= 11 640x480 B/W graphics (MCGA,VGA)

= 12 640x480 16 color graphics (VGA)

= 13 320x200 256 color graphics (MCGA,VGA)

= 8x EGA, MCGA or VGA ignore bit 7, see below

= 9x EGA, MCGA or VGA ignore bit 7, see below

- if AL bit 7=1, prevents EGA,MCGA & VGA from clearing display

- function updates byte at 40:49; bit 7 of byte 40:87

(EGA/VGA Display Data Area) is set to the value of AL bit 7