zxkbd

ZX Spectrum PS/2 keyboard controller

About

This project is an PS/2 keyboard controller for the ZX Spectrum. It makes it possible to connect and use an external PS/2 keyboard with the spectrum. It's based on the a500kbd code: https://github.com/jtsiomb/a500kbd

The PS/2 keyboard controller is built around an AVR atmega168 microcontroller. The firmware reads PS/2 keyboard scancodes, maintains a virtual spectrum keyboard state, and monitors the address bus to keep the data lines going into the ULA continuously up to date with the selected key row state.

NOTE: not done. check back soon.

License

Copyright (C) 2020 John Tsiombikas [email protected]

You are free to use, reproduce, modify, redistribute any parts of this project, provided you make any derivative work you release, freely available under the same terms.

More specifically the hardware design is released under the Creative Commons Attribution Share-Alike license (see LICENSE.hw for details), and the software/firmware is released under the GNU General Public License v3, or later (see LICENSE.fw for details).