A poorly Zeddy
- 1024MAK
- Posts: 5118
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: A poorly Zeddy
A new control system for a pizza oven so that you can have hot pizza when you get home?
Mark
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert ![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Looking forward to summer later in the year.
- 1024MAK
- Posts: 5118
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: A poorly Zeddy
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert ![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Looking forward to summer later in the year.
Re: A poorly Zeddy
No it's the kludge fix for his UDG board which could only manage to display 127.9342876 out of 128 UDG's.
(apologies to the Pentium floating point unit design team)
![Laughing :lol:](./images/smilies/icon_lol.gif)
(apologies to the Pentium floating point unit design team)
Re: A poorly Zeddy
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
@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
what's that Smell.... smells like fresh flux and solder fumes...
Re: A poorly Zeddy
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
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?
I'Il pick this one
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
Re: A poorly Zeddy
To me it seems the bottom pcb is missing alle the capacitors, diodes etc. Strange?
Re: A poorly Zeddy
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.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?
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)
Re: A poorly Zeddy
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
@martin, most of the passives have been mounted on the back side of teh board, see the images in the earlier posts
Andy
what's that Smell.... smells like fresh flux and solder fumes...
Re: A poorly Zeddy
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!
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