PS/2 Keyboard Input

JonnyMac

The Propeller-heads shouldn't be the only ones to have fun with PS/2 keyboards. Today one of Parallax's cut little PS/2 breadboard adapters arrived so I did a bit of a web search and came up with a simple SX/B test program for it. The emphasis here is on simple. The function, GET_KEY, kind of works like the inline SERIN... it blocks until a key is pressed (or released). The routine checks for extended and break codes and will set flags accordingly.

This is just a first go but, perhaps, it will inspire others to give it a try a come up with a cleaner, more sophisticated (e.g. parity check) version.

DosManDan

Nice! Thanks, now I have something else to try out.

Dan

T&E Engineer

That's great. I tried to convert a PS/2 hardware design originally for a Basic Stamp 2 over to an sx28 but had no initial luck with it. I'm so glad we have people like JonnyMac, Bean and many others that provide users such great support in their projects. I may want to use this in a future upgrade of a project I'm working on requiring keyboard input to sx micro-controllers. Good timing! Time to get some PS/2 to breadboard adapters as anything like these alone are very difficult to find locally.

Thanks again.

Peter Verkaik

Jon,
Thanks for the keyboard program.
Here are two links to other ps/2 keyboard·programs:
http://www.sxlist.com/techref/ubicom/contest/psxkeys/index.htm
http://www.sxlist.com/techref/ubicom/lib/io/dev/keys/pckeytst-gfh.htm

Would be nice if all this will evolve into a PS/2 Virtual Peripheral.

regards peter

JonnyMac

Thanks for the references, Peter, though I can't check them at the moment as James' server seems to be down. It will be interesting to see what others have done -- of course, I had to try it for myself for all the chiding I do of others to experiment.

I'm not as clever with assembly as you, or PJV, or Bean, but I too am hoping to create a VP version for future projects.

Peter Verkaik

I retrieved the listings using internet archive and attached them here.

regards peter
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Chet

Gents, thank you all very much for your help. JonnyMac, I made a mistake the first time I tried your code. I had accidetically commented out part of the code. It is working now. I can move on to the next step of the project.
I do appreaciate all the input. It is a pleasure having a group like this for support.

Regards

Chet