Thread: Zx81
View Single Post
Old 4th May 2020, 2:59 pm   #321
Join Date: May 2008
Location: Derby, UK.
Posts: 7,732
Default Re: Zx81

The ZX81 keyboard was never very highly regarded as a keyboard, and one of the most popular upgrades was a "proper" keyboard.

You can easily build something better with tactile switches and copper-strip breadboard.

The ZX cursor keys are 5, 6, 7, 8, 0 (in the same order, left-down-up-right as vi) not 6, 7, 8, 9, 0, and therefore span two half-rows of the matrix. But you should be able to use 4016 / 4066 bilateral switches to simulate keystrokes.
If I have seen further than others, it is because I was standing on a pile of failed experiments.
julie_m is offline