Int 16/AH=03h

KEYBOARD - SET TYPEMATIC RATE AND DELAY

AH = 03h
AL = subfunction
00h set default delay and rate (PCjr and some PS/2)
01h increase delay before repeat (PCjr)
02h decrease repeat rate by factor of 2 (PCjr)
03h increase delay and decrease repeat rate (PCjr)
04h turn off typematic repeat (PCjr and some PS/2)
05h set repeat rate and delay (AT,PS)
BH = delay value (00h = 250ms to 03h = 1000ms)
BL = repeat rate (00h=30/sec to 0Ch=10/sec [def] to 1Fh=2/sec)
06h get current typematic rate and delay (newer PS/2s)
Return:
BL = repeat rate (above)
BH = delay (above)

Return:
AH destroyed by many BIOSes

Note: Use INT 16/AH=09h to determine whether some of the subfunctions are supported

See Also: INT 16/AH=09h - AH=29h"HUNTER" - AH=2Ah"HUNTER"

Category: Bios - Int 16h - K

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