How to read raw keyboard codes?

iljitsch · Post by **iljitsch** » Fri May 28, 2021 2:37 pm

Ever since I got a mechanical keyboard with hot swappable switches I find it very useful to have an app that will show me which key(s) I'm pressing. So I've made several (!) keyboard test programs. I also want to make one for the X16. But... how do I read the raw keycodes produced by the keyboard?

AFAIK on the C64 the KERNAL API only gives you the character a keypress produces, and obviously the C64 tricks for lower level access don't work on the X16 because it uses a completely different keyboard interface.

Elektron72 · Post by **Elektron72** » Fri May 28, 2021 2:53 pm

There's a section in the Programmer's Reference Guide about custom scan code handlers: https://github.com/commanderx16/x16-docs/blob/master/Commander X16 Programmer's Reference Guide.md#custom-keyboard-scan-code-handler

However, I believe this only works using the latest version of the ROM built from source (what will eventually become r39).

iljitsch · Post by **iljitsch** » Fri May 28, 2021 8:36 pm

Thanks!

svenvandevelde · Post by **svenvandevelde** » Wed Jun 02, 2021 3:28 pm

On 5/28/2021 at 4:53 PM, Elektron72 said:

There's a section in the Programmer's Reference Guide about custom scan code handlers: https://github.com/commanderx16/x16-docs/blob/master/Commander X16 Programmer's Reference Guide.md#custom-keyboard-scan-code-handler

However, I believe this only works using the latest version of the ROM built from source (what will eventually become r39).

Thank you. Was also looking into this.