Zx81 expansion pcb

Discussions about Sinclair ZX80 and ZX81 Hardware
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Leorwn
Posts: 1
Joined: Tue Oct 01, 2019 4:43 pm

Zx81 expansion pcb

Post by Leorwn »

Hi
Anyone knows availability of expansion extender for zx81? And also prototype expander pcb I can prototype with?
There used to be on sellmyretro but no longer available.
Something like the green pcb in attachment that allows connecting additional standard expansion modules in addition to the prototype i am doing

Thx
Leor
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mrtinb
Posts: 1910
Joined: Fri Nov 06, 2015 5:44 pm
Location: Denmark
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Re: Zx81 expansion pcb

Post by mrtinb »

That's my old picture when I used wire wrapping.

You could get a connector for the ZX Spectrum, and cut it to size for the ZX81.

Image

I use the connector made for wire wrapping, but I connect it to Dupont cables, and on to breadboard.

Image

Image
Martin
https://zx.rtin.be
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
bola_dor
Posts: 398
Joined: Wed Oct 02, 2019 5:32 am

Re: Zx81 expansion pcb

Post by bola_dor »

You can use and ISA connector from and old motherboard.. and some handwork..
Ernesto
ZX80 USA, ZX81UK, ZX Spectrum, ZX Spectrum+, ZX Spectrum 128+ UK, ZX Spectrum +2/A, Sinclair QL, CZ1000, CZ1500, CZ2000, CZ1000Plus, CZ1500Plus, CZ Spectrum, CZ Spectrum Plus, TK83, TK85, TK90X, TK95. TS2068. And more to come :D
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