Date   : Thu, 05 Jan 2012 14:21:46 +0100
From   : nicolagiacobbe@... (nicola giacobbe)
Subject: Not Exactly a BBC Question But...

Since it is just a serial bit stream problem and the timing is quite reachable
why do not use a BBC computer as a keyboard?
If you are interested I could give you the connection details and some test
software. The major problem is my not having
a FM-77 AV 40 SX so you are basically on your own if something doesn't work.

On Thu, 05 Jan 2012 09:05:38 +0100, Conrad Russo <conrad.russo@...>
wrote:

> Hi everyone, it's been a while since my last post, but life has been super
> busy. Anyway, I need some help with a simple hardware project. I've just
> bought an FM-77 AV 40 SX, but I got it without a keyboard. I have all the
> information required to create an adapter to let me use PS/2 keyboards with
> the FM, but I just don't have the practical hardware development experience
> to turn the information into an actual device. Can someone give me a little
> help? I have all the codes that the keyboard sends to the computer for
> every single key, as well as the data rate, the repeat timing, and how the
> keyboard responds to multiple keypresses, as well as the pinouts. I know
> this problem can be solved with a uController or a (C)PLD but I just don't
> have the experience with VHDL or Microcontrollers nor the knowledge of the
> PS/2 protocol to actually put it together. Can someone possibly help me? I
> will post all the pertinant information below:
>
> Info on data rate etc:
> https://docs.google.com/document/d/1ES069x3zrfYlR6ruTYY5UFvNByLysXoxOFGJ-IDGm4A/edit
> Keyboard Serial Codes:
> https://docs.google.com/spreadsheet/ccc?key=0Alhvp8gopwkpdG03Ni10UmNrN2tzQ2U4TWlTUHFnVnc
> Pinout:
> https://docs.google.com/open?id=0B1hvp8gopwkpOGQ5NjM0ZGYtNWI0My00NzM5LThmNzEtOGUwODY0MmQ3NDM2
>
> I know there are more then a few people with FM 77 AV series machines
> looking for keyboards, so this could actually make back anything anyone
> puts into it. I am capable of assembling any boards (if they are
> through-hole that would be even easier ;)) I just need help with the design
> side of things. Please, if anyone out there can help me, it would be very
> much appreciated. I can't put the FM 77 AV in my museum without a keyboard.
>


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