Timex Sinclair 1000 repair

[granz]

I actually have ones laying around.

Yeah, I kind of thought that you might. As I mentioned, many people have them on hand - especially people like us.

[MicroNut]

I use Eighty-One alot! Very realistic. You can add video affects to the video so it can be just as fuzzy as a CRT TV. It even has the infamous ram pack bug. The Ram Pack expansion had a habit of disconnecting from the ZX81 if you bumped the ZX81 then "POOF" program gone! It is a button in Eight-One you can click to simulate it.

@JKnightandKARR how did you connect a keyboard to the ZX81? It used a 5x8 matrix of switches connected to the ULA and decoded in the rom. A normal keyboard uses a formatted bitstream via PS2 or USB.

[Chris Savage]

how did you connect a keyboard to the ZX81? It used a 5x8 matrix of switches connected to the ULA and decoded in the rom. A normal keyboard uses a formatted bitstream via PS2 or USB.

I was going to ask the same question...

[granz]

Back when I built my keyboard for my ZX-81, I used a surplus, non-encoded keyboard. When I mentioned the glue-on key labels to Joe, I was referring to his emulator:

It's an Emulator for ZX80/ZX81/Spectrum etc. Ironically it even has files for the Timex Sinclair 1000 even though its the same as the Sinclair ZX81 lol, anywho, if you hit Help menu there's a drop down option for the original keyboard for reference purposes.

For a real keyboard, for a real(ish) ZX-81/TS1000 (or a separate cheapie USB keyboard for an emulated ZX,) the glue-on labels will come in real handy.

[MicroNut]

Oops  I thought he was talking about a real ZX81. I did get a ZX81 simulated on a DE0-Nano FPGA that had a PS2 connection for a normal keyboard. I remember back in the early eighties picking up a keyboard from Radio Shack that you had to wire each key. I was planning on connecting it to my Timex Sinclair 1000 but never got around to it and the keyboard was eventually thrown out.

BTW ZEsarUX is another excellent ZX81/Spectrum emulator.