Operating Systems Development Series

Operating Systems Development - Scan Codes
by Mike, 2008

This series is intended to demonstrate and teach operating system development from the ground up.

Introduction

This is a resource that lists all of the scan codes. There are three defined scan code sets for the keybord controller.

Original XT Scan Code Set

Scan Code Set

KEY	MAKE	BREAK	`-----`	KEY	MAKE	BREAK	`-----`	KEY	MAKE	BREAK
`A`	`1E`	`9E`		`9`	`0A`	`8A`		`[`	`1A`	`9A`
`B`	`30`	`B0`		`	`29`	`89`		`INSERT`	`E0,52`	`E0,D2`
`C`	`2E`	`AE`		`-`	`0C`	`8C`		`HOME`	`E0,47`	`E0,97`
`D`	`20`	`A0`		`=`	`0D`	`8D`		`PG UP`	`E0,49`	`E0,C9`
`E`	`12`	`92`		`\`	`2B`	`AB`		`DELETE`	`E0,53`	`E0,D3`
`F`	`21`	`A1`		`BKSP`	`0E`	`8E`		`END`	`E0,4F`	`E0,CF`
`G`	`22`	`A2`		`SPACE`	`39`	`B9`		`PG DN`	`E0,51`	`E0,D1`
`H`	`23`	`A3`		`TAB`	`0F`	`8F`		`U ARROW`	`E0,48`	`E0,C8`
`I`	`17`	`97`		`CAPS`	`3A`	`BA`		`L ARROW`	`E0,4B`	`E0,CB`
`J`	`24`	`A4`		`L SHFT`	`2A`	`AA`		`D ARROW`	`E0,50`	`E0,D0`
`K`	`25`	`A5`		`L CTRL`	`1D`	`9D`		`R ARROW`	`E0,4D`	`E0,CD`
`L`	`26`	`A6`		`L GUI`	`E0,5B`	`E0,DB`		`NUM`	`45`	`C5`
`M`	`32`	`B2`		`L ALT`	`38`	`B8`		`KP /`	`E0,35`	`E0,B5`
`N`	`31`	`B1`		`R SHFT`	`36`	`B6`		`KP *`	`37`	`B7`
`O`	`18`	`98`		`R CTRL`	`E0,1D`	`E0,9D`		`KP -`	`4A`	`CA`
`P`	`19`	`99`		`R GUI`	`E0,5C`	`E0,DC`		`KP +`	`4E`	`CE`
`Q`	`10`	`90`		`R ALT`	`E0,38`	`E0,B8`		`KP EN`	`E0,1C`	`E0,9C`
`R`	`13`	`93`		`APPS`	`E0,5D`	`E0,DD`		`KP .`	`53`	`D3`
`S`	`1F`	`9F`		`ENTER`	`1C`	`9C`		`KP 0`	`52`	`D2`
`T`	`14`	`94`		`ESC`	`01`	`81`		`KP 1`	`4F`	`CF`
`U`	`16`	`96`		`F1`	`3B`	`BB`		`KP 2`	`50`	`D0`
`V`	`2F`	`AF`		`F2`	`3C`	`BC`		`KP 3`	`51`	`D1`
`W`	`11`	`91`		`F3`	`3D`	`BD`		`KP 4`	`4B`	`CB`
`X`	`2D`	`AD`		`F4`	`3E`	`BE`		`KP 5`	`4C`	`CC`
`Y`	`15`	`95`		`F5`	`3F`	`BF`		`KP 6`	`4D`	`CD`
`Z`	`2C`	`AC`		`F6`	`40`	`C0`		`KP 7`	`47`	`C7`
`0`	`0B`	`8B`		`F7`	`41`	`C1`		`KP 8`	`48`	`C8`
`1`	`02`	`82`		`F8`	`42`	`C2`		`KP 9`	`49`	`C9`
`2`	`03`	`83`		`F9`	`43`	`C3`		`]`	`1B`	`9B`
`3`	`04`	`84`		`F10`	`44`	`C4`		`;`	`27`	`A7`
`4`	`05`	`85`		`F11`	`57`	`D7`		`'`	`28`	`A8`
`5`	`06`	`86`		`F12`	`58`	`D8`		`,`	`33`	`B3`
`6`	`07`	`87`		`PRNT` `SCRN`	`E0,2A,` `E0,37`	`E0,B7,` `E0,AA`		`.`	`34`	`B4`
`7`	`08`	`88`		`SCROLL`	`46`	`C6`		`/`	`35`	`B5`
`8`	`09`	`89`		`PAUSE`	`E1,1D,45` `E1,9D,C5`	`-NONE-`

ACPI Scan Codes

Key	Make Code	Break Code
Power	E0, 5E	E0, DE
Sleep	E0, 5F	E0, DF
Wake	E0, 63	E0, E3

Windows Multimedia Scan Codes

Key	Make Code	Break Code
Next Track	E0, 19	E0, 99
Previous Track	E0, 10	E0, 90
Stop	E0, 24	E0, A4
Play/Pause	E0, 22	E0, A2
Mute	E0, 20	E0, A0
Volume Up	E0, 30	E0, B0
Volume Down	E0, 2E	E0, AE
Media Select	E0, 6D	E0, ED
E-Mail	E0, 6C	E0, EC
Calculator	E0, 21	E0, A1
My Computer	E0, 6B	E0, EB
WWW Search	E0, 65	E0, E5
WWW Home	E0, 32	E0, B2
WWW Back	E0, 6A	E0, EA
WWW Forward	E0, 69	E0, E9
WWW Stop	E0, 68	E0, E8
WWW Refresh	E0, 67	E0, E7
WWW Favorites	E0, 66	E0, E6

Default Scan Code Set for Modern Keyboards

Scan Code Set

KEY	MAKE	BREAK	`-----`	KEY	MAKE	BREAK	-----	KEY	MAKE	BREAK
`A`	`1C`	`F0,1C`		`9`	`46`	`F0,46`		`[`	`54`	`FO,54`
`B`	`32`	`F0,32`		`	`0E`	`F0,0E`		`INSERT`	`E0,70`	`E0,F0,70`
`C`	`21`	`F0,21`		`-`	`4E`	`F0,4E`		`HOME`	`E0,6C`	`E0,F0,6C`
`D`	`23`	`F0,23`		`=`	`55`	`FO,55`		`PG UP`	`E0,7D`	`E0,F0,7D`
`E`	`24`	`F0,24`		`\`	`5D`	`F0,5D`		`DELETE`	`E0,71`	`E0,F0,71`
`F`	`2B`	`F0,2B`		`BKSP`	`66`	`F0,66`		`END`	`E0,69`	`E0,F0,69`
`G`	`34`	`F0,34`		`SPACE`	`29`	`F0,29`		`PG DN`	`E0,7A`	`E0,F0,7A`
`H`	`33`	`F0,33`		`TAB`	`0D`	`F0,0D`		`U ARROW`	`E0,75`	`E0,F0,75`
`I`	`43`	`F0,43`		`CAPS`	`58`	`F0,58`		`L ARROW`	`E0,6B`	`E0,F0,6B`
`J`	`3B`	`F0,3B`		`L SHFT`	`12`	`FO,12`		`D ARROW`	`E0,72`	`E0,F0,72`
`K`	`42`	`F0,42`		`L CTRL`	`14`	`FO,14`		`R ARROW`	`E0,74`	`E0,F0,74`
`L`	`4B`	`F0,4B`		`L GUI`	`E0,1F`	`E0,F0,1F`		`NUM`	`77`	`F0,77`
`M`	`3A`	`F0,3A`		`L ALT`	`11`	`F0,11`		`KP /`	`E0,4A`	`E0,F0,4A`
`N`	`31`	`F0,31`		`R SHFT`	`59`	`F0,59`		`KP *`	`7C`	`F0,7C`
`O`	`44`	`F0,44`		`R CTRL`	`E0,14`	`E0,F0,14`		`KP -`	`7B`	`F0,7B`
`P`	`4D`	`F0,4D`		`R GUI`	`E0,27`	`E0,F0,27`		`KP +`	`79`	`F0,79`
`Q`	`15`	`F0,15`		`R ALT`	`E0,11`	`E0,F0,11`		`KP EN`	`E0,5A`	`E0,F0,5A`
`R`	`2D`	`F0,2D`		`APPS`	`E0,2F`	`E0,F0,2F`		`KP .`	`71`	`F0,71`
`S`	`1B`	`F0,1B`		`ENTER`	`5A`	`F0,5A`		`KP 0`	`70`	`F0,70`
`T`	`2C`	`F0,2C`		`ESC`	`76`	`F0,76`		`KP 1`	`69`	`F0,69`
`U`	`3C`	`F0,3C`		`F1`	`05`	`F0,05`		`KP 2`	`72`	`F0,72`
`V`	`2A`	`F0,2A`		`F2`	`06`	`F0,06`		`KP 3`	`7A`	`F0,7A`
`W`	`1D`	`F0,1D`		`F3`	`04`	`F0,04`		`KP 4`	`6B`	`F0,6B`
`X`	`22`	`F0,22`		`F4`	`0C`	`F0,0C`		`KP 5`	`73`	`F0,73`
`Y`	`35`	`F0,35`		`F5`	`03`	`F0,03`		`KP 6`	`74`	`F0,74`
`Z`	`1A`	`F0,1A`		`F6`	`0B`	`F0,0B`		`KP 7`	`6C`	`F0,6C`
`0`	`45`	`F0,45`		`F7`	`83`	`F0,83`		`KP 8`	`75`	`F0,75`
`1`	`16`	`F0,16`		`F8`	`0A`	`F0,0A`		`KP 9`	`7D`	`F0,7D`
`2`	`1E`	`F0,1E`		`F9`	`01`	`F0,01`		`]`	`5B`	`F0,5B`
`3`	`26`	`F0,26`		`F10`	`09`	`F0,09`		`;`	`4C`	`F0,4C`
`4`	`25`	`F0,25`		`F11`	`78`	`F0,78`		`'`	`52`	`F0,52`
`5`	`2E`	`F0,2E`		`F12`	`07`	`F0,07`		`,`	`41`	`F0,41`
`6`	`36`	`F0,36`		`PRNT` `SCRN`	`E0,12,` `E0,7C`	`E0,F0,` `7C,E0,` `F0,12`		`.`	`49`	`F0,49`
`7`	`3D`	`F0,3D`		`SCROLL`	`7E`	`F0,7E`		`/`	`4A`	`F0,4A`
`8`	`3E`	`F0,3E`		`PAUSE`	`E1,14,77,` `E1,F0,14,` `F0,77`	`-NONE-`

ACPI Scan Codes

Key	Make Code	Break Code
Power	E0, 37	E0, F0, 37
Sleep	E0, 3F	E0, F0, 3F
Wake	E0, 5E	E0, F0, 5E

Windows Multimedia Scan Codes

Key	Make Code	Break Code
Next Track	E0, 4D	E0, F0, 4D
Previous Track	E0, 15	E0, F0, 15
Stop	E0, 3B	E0, F0, 3B
Play/Pause	E0, 34	E0, F0, 34
Mute	E0, 23	E0, F0, 23
Volume Up	E0, 32	E0, F0, 32
Volume Down	E0, 21	E0, F0, 21
Media Select	E0, 50	E0, F0, 50
E-Mail	E0, 48	E0, F0, 48
Calculator	E0, 2B	E0, F0, 2B
My Computer	E0, 40	E0, F0, 40
WWW Search	E0, 10	E0, F0, 10
WWW Home	E0, 3A	E0, F0, 3A
WWW Back	E0, 38	E0, F0, 38
WWW Forward	E0, 30	E0, F0, 30
WWW Stop	E0, 28	E0, F0, 28
WWW Refresh	E0, 20	E0, F0, 20
WWW Favorites	E0, 18	E0, F0, 18

PS/2 Scan Code Set for AT Motherboards

KEY	MAKE	BREAK	`-----`	KEY	MAKE	BREAK	-----	KEY	MAKE	BREAK
`A`	`1C`	`F0,1C`		`9`	`46`	`F0,46`		`[`	`54`	`F0,54`
`B`	`32`	`F0,32`		`	`0E`	`F0,0E`		`INSERT`	`67`	`F0,67`
`C`	`21`	`F0,21`		`-`	`4E`	`F0,4E`		`HOME`	`6E`	`F0,6E`
`D`	`23`	`F0,23`		`=`	`55`	`F0,55`		`PG UP`	`6F`	`F0,6F`
`E`	`24`	`F0,24`		`\`	`5C`	`F0,5C`		`DELETE`	`64`	`F0,64`
`F`	`2B`	`F0,2B`		`BKSP`	`66`	`F0,66`		`END`	`65`	`F0,65`
`G`	`34`	`F0,34`		`SPACE`	`29`	`F0,29`		`PG DN`	`6D`	`F0,6D`
`H`	`33`	`F0,33`		`TAB`	`0D`	`F0,0D`		`U ARROW`	`63`	`F0,63`
`I`	`43`	`F0,48`		`CAPS`	`14`	`F0,14`		`L ARROW`	`61`	`F0,61`
`J`	`3B`	`F0,3B`		`L SHFT`	`12`	`F0,12`		`D ARROW`	`60`	`F0,60`
`K`	`42`	`F0,42`		`L CTRL`	`11`	`F0,11`		`R ARROW`	`6A`	`F0,6A`
`L`	`4B`	`F0,4B`		`L WIN`	`8B`	`F0,8B`		`NUM`	`76`	`F0,76`
`M`	`3A`	`F0,3A`		`L ALT`	`19`	`F0,19`		`KP /`	`4A`	`F0,4A`
`N`	`31`	`F0,31`		`R SHFT`	`59`	`F0,59`		`KP *`	`7E`	`F0,7E`
`O`	`44`	`F0,44`		`R CTRL`	`58`	`F0,58`		`KP -`	`4E`	`F0,4E`
`P`	`4D`	`F0,4D`		`R WIN`	`8C`	`F0,8C`		`KP +`	`7C`	`F0,7C`
`Q`	`15`	`F0,15`		`R ALT`	`39`	`F0,39`		`KP EN`	`79`	`F0,79`
`R`	`2D`	`F0,2D`		`APPS`	`8D`	`F0,8D`		`KP .`	`71`	`F0,71`
`S`	`1B`	`F0,1B`		`ENTER`	`5A`	`F0,5A`		`KP 0`	`70`	`F0,70`
`T`	`2C`	`F0,2C`		`ESC`	`08`	`F0,08`		`KP 1`	`69`	`F0,69`
`U`	`3C`	`F0,3C`		`F1`	`07`	`F0,07`		`KP 2`	`72`	`F0,72`
`V`	`2A`	`F0,2A`		`F2`	`0F`	`F0,0F`		`KP 3`	`7A`	`F0,7A`
`W`	`1D`	`F0,1D`		`F3`	`17`	`F0,17`		`KP 4`	`6B`	`F0,6B`
`X`	`22`	`F0,22`		`F4`	`1F`	`F0,1F`		`KP 5`	`73`	`F0,73`
`Y`	`35`	`F0,35`		`F5`	`27`	`F0,27`		`KP 6`	`74`	`F0,74`
`Z`	`1A`	`F0,1A`		`F6`	`2F`	`F0,2F`		`KP 7`	`6C`	`F0,6C`
`0`	`45`	`F0,45`		`F7`	`37`	`F0,37`		`KP 8`	`75`	`F0,75`
`1`	`16`	`F0,16`		`F8`	`3F`	`F0,3F`		`KP 9`	`7D`	`F0,7D`
`2`	`1E`	`F0,1E`		`F9`	`47`	`F0,47`		`]`	`5B`	`F0,5B`
`3`	`26`	`F0,26`		`F10`	`4F`	`F0,4F`		`;`	`4C`	`F0,4C`
`4`	`25`	`F0,25`		`F11`	`56`	`F0,56`		`'`	`52`	`F0,52`
`5`	`2E`	`F0,2E`		`F12`	`5E`	`F0,5E`		`,`	`41`	`F0,41`
`6`	`36`	`F0,36`		`PRNT` `SCRN`	`57`	`F0,57`		`.`	`49`	`F0,49`
	`3D`	`F0,3D`		`SCROLL`	`5F`	`F0,5F`		`/`	`4A`	`F0,4A`
`8`	`3E`	`F0,3E`		`PAUSE`	`62`	`F0,62`

Conclusion

Until next time,

~Mike ();
BrokenThorn Entertainment. Currently developing EvolutionEngine and MicroOS Operating System.

Questions or comments? Feel free to Contact me.