INT 16,3 - Set Keyboard Typematic Rate (AT+)

AH = 03

AL = 00 set typematic rate to default

01 increase initial delay

02 slow typematic rate by 1/2

04 turn off typematic chars

05 set typematic rate/delay

BH = repeat delay (AL=5)

0 = 250ms 2 = 750ms

1 = 500ms 3 = 1000ms

BL = typematic rate, one of the following (AL=5)

00 - 30.0 01 - 26.7 02 - 24.0 03 - 21.8

04 - 20.0 05 - 18.5 06 - 17.1 07 - 16.0

08 - 15.0 09 - 13.3 0A - 12.0 0B - 10.9

0C - 10.0 0D - 9.2 0E - 8.6 0F - 8.0

10 - 7.5 11 - 6.7 12 - 6.0 13 - 5.5

14 - 5.0 15 - 4.6 16 - 4.3 17 - 4.0

18 - 3.7 19 - 3.3 1A - 3.0 1B - 2.7

1C - 2.5 1D - 2.3 1E - 2.1 1F - 2.0

returns nothing

- if the typematic rate is not within range,no action is taken

- available on AT and PS/2 machines with extended keyboard support

- see ~KEYBOARD COMMANDS~