AT/PS2 Keybord - PIC Interface?

[Dave]

skimask, The way I interpret a colon is to terminate a line of code and, allow the start of another command string to be placed on the same line. If this is the case then all of his IF/THEN statements should have and ending ENDIF command. I have not tried this as I never write code in this fashion. It is much to confusing and hard to follow the flow... Have you ever tried this format? If it works then GREAT...

Dave Purola,
N8NTA

[skimask]

It is much to confusing and hard to follow the flow... Have you ever tried this format? If it works then GREAT...

I guess I use whatever fits/works and takes up as few actual lines on the screen.
As far as being confusing, well, I usually don't write code for other folks (reference the High Colonic Master ), and if I wrote it for myself, then I'd better be able to follow it! And as long as a guy keeps a constant format...well, that should be all ya need...
But, I'm going to play with the If/Then colon format thing tonight when I get home and see what happens...

[PJALM]

Are you guys looking to emulate a PS/2 keyboard or get data from a PS/2 keyboard?

I have pure PBP code for both if you need it.

[sayzer]

Are you guys looking to emulate a PS/2 keyboard or get data from a PS/2 keyboard?

I have pure PBP code for both if you need it.

May I see the emulation code, then?
IF, of course, it is responding to the system commands ??


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[skimask]

May I see the emulation code, then?
IF, of course, it is responding to the system commands ??
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I second that commotion...no sense reinventing the wheel...
It's the responding back to the PC bit that gets me...

[sayzer]

I second that commotion...no sense reinventing the wheel...
It's the responding back to the PC bit that gets me...

Ski, I did not quite understand what you meant but,
PC (system) can terminate the communication while KB is sending data to it AND send system commands to it to have it do something; turn on/off status leds, resend last byte etc...

The thing is to detect this termination thingie during an active transmission.

This is what I meant.

[skimask]

Ski, I did not quite understand what you meant but,
PC (system) can terminate the communication while KB is sending data to it AND send system commands to it to have it do something; turn on/off status leds, resend last byte etc...
The thing is to detect this termination thingie during an active transmission.
This is what I meant.

Ok, I was talking about the initial comm's to the keyboard when the PC powers up. It's been discussed in a couple of other threads somewhere.

[mpardinho]

PJALM's

is possible upload the code?

i use http://www.picbasic.co.uk/forum/arch...hp/t-2736.html but not work leds

many thanks

[skimask]

http://www.picbasic.co.uk/forum/arch...hp/t-2736.html

Where have I seen that thread before? Guess I'll go to Post #1 and read through it again and try to figure it out. (i.e. endless loop)

[gatlartech]

Are you guys looking to emulate a PS/2 keyboard or get data from a PS/2 keyboard?

I have pure PBP code for both if you need it.

I am interested in code to emulate a PS/2 keyboard using a 16f88 interfacing to an embedded PC. Is it possible to view your PBP code?

[charudatt]

showed the carrot and now missing in action.

Where is the guy with the PBP code ?

[ShoKre]

i have to do 4x4 scan key to ps2 intf. with (one time) programmable keys, numeric part + some fonction key ie. P, A, X, Y...
but I'm not shure is it a lot of work in that system area,: tx ack, rx sys requests, init in PCstart, and others, if there is a way to put paralel with old kb board to do that portion, (if I dont hawe to switch betwen) then, sems to be easy ?

[mister_e]

PS2 emulation is harder than it seems. Maybe possible to fit a PIC in parallel of an existing controller, but i feel some potential bit collision one day or another.

I've done it with a single PIC, and frankly... enough time spent and wasted on it to hate it now