These are the values for "pressed" keyboard scancodes
(the "released" value has bit7 set ) [ using the ibm pc compatible mode]
plus some codes used for keyboard controller communications
and/or generation on "multiple-scancode" press/release

 01h	Esc		 31h	N
 02h	1 !		 32h	M
 03h	2 @		 33h	, <		 63h	F16
 04h	3 #		 34h	. >		 64h	F17
 05h	4 $		 35h	/ ?		 65h	F18
 06h	5 %		 36h	Right Shift	 66h	F19
 07h	6 ^		 37h	Grey*		 67h	F20
 08h	7 &		 38h	Alt		 68h	F21
 09h	8 *		 39h	SpaceBar	 69h	F22
 0Ah	9 (		 3Ah	CapsLock	 6Ah	F23
 0Bh	0 )		 3Bh	F1		 6Bh	F24
 0Ch	- _		 3Ch	F2		 6Ch	--
 0Dh	= +		 3Dh	F3		 6Dh	EraseEOF
 0Eh	Backspace	 3Eh	F4
 0Fh	Tab		 3Fh	F5		 6Fh	Copy/Play
 10h	Q		 40h	F6
 11h	W		 41h	F7
 12h	E		 42h	F8		 72h	CrSel
 13h	R		 43h	F9
 14h	T		 44h	F10		 74h	ExSel
 15h	Y		 45h	NumLock		 75h	--
 16h	U		 46h	ScrollLock	 76h	Clear
 17h	I		 47h	Home
 18h	O		 48h	UpArrow
 19h	P		 49h	PgUp
 1Ah	[ {		 4Ah	Grey-
 1Bh	] }		 4Bh	LeftArrow
 1Ch	Enter		 4Ch	Keypad 5
 1Dh	Ctrl		 4Dh	RightArrow
 1Eh	A		 4Eh	Grey+
 1Fh    S                4Fh    End              THESE ARE "CONTROL" CODES:
 20h	D		 50h	DownArrow	 E0h	prefix code
 21h	F		 51h	PgDn		 E1h	prefix code
 22h	G		 52h	Ins		 FAh	ACK
 23h	H		 53h	Del		 FEh	RESEND
 24h	J		 54h	SysReq		 FFh	kbd error/buffer full
 25h	K
 26h	L		 56h	left \| (102-key)
 27h	; :		 57h	F11
 28h	' "		 58h	F12
 29h	` ~
 2Ah	Left Shift	 5Ah	PA1
 2Bh	\ |		 5Bh	F13
 2Ch	Z		 5Ch	F14
 2Dh	X		 5Dh	F15
 2Eh	C
 2Fh	V
 30h	B

N.B.
THESE ARE THE VALUES FOR "AMERICAN" KEYBOARDS!!!!!
Anyway, space,shift,control & cursor keys
and function (F1 .. F10) are the same on all keyboards.

Scan codes 56h-58h E0h-E1h are only available on the extended (101/102-key)
keyboard and Host Connected (122-key) keyboard.
Scan codes 5Ah-76h are only available on the 122-key keyboard.
The SysReq key is often labeled SysRq.

This explains why we need "dos mode" access to read ascii keys correctly.