OS_Byte 121 key scan codes

I have just come across some code in a program that uses OS_Byte 121 to scan the keyboard. I tries to handle the following codes which I can find no confirmation of their usage…

12
13
14
15
75
80
92
95
109
110
111
125 “Win Left”
126 “Win Right”
127 “Win Menu”

The last 3 seem to be produced with the keys indicated on my Iyonix.

Is there a definitive list anywhere?

Is there a definitive list anywhere?

Either this:

KeyNo_AcornLeft                 * &68  ; 125
KeyNo_AcornRight                * &69  ; 126
KeyNo_Menu                      * &6A  ; 127

or that:

KeyScan_AcornLeft               * 125  ; -126   &68
KeyScan_AcornRight              * 126  ; -127   &69
KeyScan_Menu                    * 127  ; -128   &6A

Both are here, along with other keys (Kana, LidClosed, Brightness Up/Down) that may or may not be supported on your particular version ☺:
https://www.riscosopen.org/viewer/view/castle/RiscOS/Sources/Programmer/HdrSrc/hdr/Keyboard?rev=4.5;content-type=text%2Fplain

For OS_Byte, INKEY, etc. it’s the KeyScan values which you want. The KeyNo values are a different set of definitions which are used by KeyV and the key events; these then get mapped to KeyScan keys by (IIRC) InternationalKeyboard, using different mappings for each keyboard type.

Thanks both – that should provide just what I needed.