A poorly Zeddy

General Chit Chat about Sinclair Computers and their Clones
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1024MAK
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Re: A poorly Zeddy

Post by 1024MAK » Tue Sep 26, 2017 4:39 pm

A new control system for a pizza oven so that you can have hot pizza when you get home?

Mark

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1024MAK
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Re: A poorly Zeddy

Post by 1024MAK » Tue Sep 26, 2017 4:41 pm

:arrow: Ahh, got it! :D

It's part of a module to help with the repair of this :mrgreen:

Mark

Moggy
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Re: A poorly Zeddy

Post by Moggy » Tue Sep 26, 2017 5:23 pm

No it's the kludge fix for his UDG board which could only manage to display 127.9342876 out of 128 UDG's. :lol:
(apologies to the Pentium floating point unit design team)

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PokeMon
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Re: A poorly Zeddy

Post by PokeMon » Tue Sep 26, 2017 5:51 pm

Maybe a Trump card ? :mrgreen:

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Andy Rea
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Re: A poorly Zeddy

Post by Andy Rea » Tue Sep 26, 2017 6:51 pm

LOL i've had a good laugh at some of those suggestions,,, @mark "ah, so you're a waffle man."

@siggi i had a thought that maybe an arduino or perhaps something a little faster pic32 maybe could sit and watch the addrress and data lines purely passively and then output the result on an coloured lcd...

regards Andy
6 x ZX81, 1 x TS1500 , 1 x +3e, 1 x timex 2040 printer, 1 x timex 2020 cassette deck, siclair printer and some spectrum

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gammaray
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Re: A poorly Zeddy

Post by gammaray » Tue Sep 26, 2017 11:37 pm

This thread seems like two threads in one given the two different images. An unpopulated board and another one called the "Sincluster ZX81ish" but...

I'Il pick this one
IMG_4048.jpg
(4.92 MiB) Downloaded 467 times

At the risk of sounding stupid (again) this one runs a ROM image from an SDCARD! But only with the approval of the thumbscanning coder in the upper left allows it to boot.

The first ZXPAND?
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM

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mrtinb
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Re: A poorly Zeddy

Post by mrtinb » Wed Sep 27, 2017 6:57 am

Andy Rea wrote:
Mon Sep 25, 2017 10:33 pm
not much progress but it hasn't been forgotten...
Image

can you tell what it is yet ?
To me it seems the bottom pcb is missing alle the capacitors, diodes etc. Strange?
Martin
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube

Moggy
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Re: A poorly Zeddy

Post by Moggy » Wed Sep 27, 2017 12:27 pm

gammaray wrote:
Tue Sep 26, 2017 11:37 pm
This thread seems like two threads in one given the two different images. An unpopulated board and another one called the "Sincluster ZX81ish" but...

I'Il pick this one

IMG_4048.jpg

At the risk of sounding stupid (again) this one runs a ROM image from an SDCARD! But only with the approval of the thumbscanning coder in the upper left allows it to boot.

The first ZXPAND?
No the first Xpand was a piece of Vero board stuffed into a Sinclair ram pack casing about a decade ago shame that the pictures are lost though.

Some interesting reading on this,now defunct, Zx81/TS1000 forum that was ran by New Yorker Bill H..

http://forum.tlienhard.com/TS1000/www.t ... 902112.htm


Moggy(Tabbycat)

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Andy Rea
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Re: A poorly Zeddy

Post by Andy Rea » Wed Sep 27, 2017 11:42 pm

ah i miss the old ts1000 site, was a good one...

@martin, most of the passives have been mounted on the back side of teh board, see the images in the earlier posts

Andy
6 x ZX81, 1 x TS1500 , 1 x +3e, 1 x timex 2040 printer, 1 x timex 2020 cassette deck, siclair printer and some spectrum

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gammaray
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Re: A poorly Zeddy

Post by gammaray » Thu Sep 28, 2017 1:10 am

I have given it some thought and it is an internal UDG and ram upgrade probably 32K with 8k in the 8-16k range.

Where is my cookie?

^No NO NO! It's his under-the-hood ULA replacement!
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM

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