My first computer was the ZX80 in 1980!

Introduce yourself to your fellow forum members - what was your journey into the Sinclair world?
Post Reply
User avatar
mooredan
Posts: 20
Joined: Sat Nov 18, 2017 3:47 pm
Location: Portland, Oregon, USA
Contact:

My first computer was the ZX80 in 1980!

Post by mooredan » Sat Dec 02, 2017 12:55 am

Hello everyone!

OK, I've got the Sinclair bug again. Just a quick intro: I'm currently an electrical engineer doing mixed signal verification on data converter ASICs (RF ->digtial & digital -> RF) . Working backwards, Intel Itanium microprocessor hardware design, ASIC design for HP/Agilent, system design for the collision detector at Fermilab, formal education at University of Illinois, airborne electronic countermeasures technician for the US Navy, basement tinkering on ZX81 and ZX80.

I really regret tossing my 30 pound box of Sinclair stuff ten years ago or so during one of my moves! ...but it was collecting dust for way too long and it just didn't seem worth moving once again. Besides I was a dirt biking guy (motorcycles) then, and had enough of that stuff to move.

But now I buying up old ZX81/TS1000's, working or not, and am looking into getting a machine running again, with the appropriate bells and whistles. ...and now with some potentially interesting improvements.

On my list:

- verilog model of the ZX81
- switchable ROM
- ULA replacement, maybe implemented in programmable logic, maybe an ASIC in On Semiconductor's C5 process
- dedicated display circuit
- CF storage

OK, pretty ambitious, but something to fill the spare time......
Dan Moore
Portland, Oregon, USA

User avatar
gammaray
Posts: 330
Joined: Sun Apr 17, 2016 1:44 am
Location: Texas

Re: My first computer was the ZX80 in 1980!

Post by gammaray » Sat Dec 02, 2017 1:35 am

mooredan wrote:
Sat Dec 02, 2017 12:55 am
I really regret tossing my 30 pound box of Sinclair stuff ten years ago or so during one of my moves!
We all do!
Finish what you start. Truth is over the mountaintop or six feet under.
4 x TS1000, 2 x TS1500 , 2 x timex 2040 printer, 1/2 x timex 2020 cassette deck, ZXPAND+AY, ZeddyNET, ZXBlast..., unfinished Spectrum...Still no life!

vwbz80a
Posts: 18
Joined: Wed Nov 29, 2017 1:35 pm

Re: My first computer was the ZX80 in 1980!

Post by vwbz80a » Sat Dec 02, 2017 2:44 am

mooredan,
Welcome in, just got here my self. great bunch of stuff going on.

Some one will say thank and you can say you are mooredan welcome........ sorry i love puns.. ;)

dessony
Posts: 158
Joined: Tue Oct 29, 2013 1:26 pm
Location: Indiana, USA

Re: My first computer was the ZX80 in 1980!

Post by dessony » Sat Dec 02, 2017 4:56 am

Welcome to the ZX80 and ZX81 forum, Dan! We also do the TS1000 and the TS1500 here! :D

Dessony (William)

User avatar
BarryN
Posts: 24
Joined: Thu Nov 09, 2017 10:34 pm

Re: My first computer was the ZX80 in 1980!

Post by BarryN » Sat Dec 02, 2017 5:12 am

I have seen a couple of different ULA replacement projects, but I haven't seen any currently available for sale.

User avatar
sirmorris
Posts: 2734
Joined: Thu May 08, 2008 4:45 pm
Location: oxon, uk

Re: My first computer was the ZX80 in 1980!

Post by sirmorris » Sat Dec 02, 2017 7:58 am

Welcome aboard!
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest