Keyboard for new ZX
ZXNet echo conference «hardware.zx»
Hello, Sergey
Ser> Take a regular AT keyboard, rip out the controller from there and hang it there
Ser> is your own, which will remap signals from film into Spectrum format. And
Ser> at the output we will have not a serial, but a parallel interface.
Ser> It's easier!
How is this easier?
Firstly, the harness will have at least 15 wires. Isn't it a bit thick?
Secondly, what Spectrum format is this? 40 switches?
It’s easier, without tearing anything out, to connect the AT keyboard to the controller,
which will output the corresponding
pressed keys scan codes.
Hello, All
I saw in some threads that the question of getting keyboards for
Spectrum. I forgot where they wrote, maybe everything has already been decided.
But I had this thought about this:
We take a regular AT keyboard, rip out the controller from there and hang ours there,
which will remap signals from film into Spectrum format. And at the exit we have
There will be not a serial, but a parallel interface.
It's easier!
Hello, Black_Cat
Bla> the extended spec keyboard worked with buffering
Bla> normal up to 5 meters
The cable was not difficult to carry :-)
Hello, Maksagor
You can even put zxmc directly into the keyboard case and get what you “need”.
But then, after realizing what had been done, I still go to the serial interface
will have to go back, because the long wires from the parallel buses will catch
a lot of interference and everything will glitch and freeze.
Hello, DVS
DVS> The cable was not difficult to carry
lighter than the desktop version of Speck with 2 flops, and a cable with a diameter of 5 mm -
not much thicker than RSshny.
Hello, DVS
DVS> long wires from parallel buses will catch a lot of interference and that’s it
DVS> will glitch and freeze
Remote keyboards are not made without buffering, but with buffering they are extended
Spec's keyboard worked fine up to 5 meters. Use in buffers
better than 555 series (LS).
Hello, Sergey
Ser> I saw in some threads that the question of getting it was raised
Ser> keyboards for Spectrum. I forgot where they wrote, maybe everything has already been decided.
Ser> But I had this thought about this:
Ser>
Ser> Take a regular AT keyboard, rip out the controller from there and hang it there
Ser> is your own, which will remap signals from film into Spectrum format. And
Ser> at the output we will have not a serial, but a parallel interface.
Ser> It's easier!
Where will you get your controller from? Will you wire it up and solder it yourself? Or better
still use ready-made and time-tested methods, order from
Kamilya Karimova for a few hundred rubles a controller and don’t screw up a good one
keyboard?
Hello, Sergey
Kamil seems to have made such a “wait-free” keyboard controller.
http://zx.pk.ru/showthread.php?t=3554&highlight=