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Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 4:39 pm
by 1024MAK
A new control system for a pizza oven so that you can have hot pizza when you get home?
Mark
Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 4:41 pm
by 1024MAK
Ahh, got it!
It's part of a module to help with the repair of
this
Mark
Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 5:23 pm
by Moggy
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)
Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 5:51 pm
by PokeMon
Maybe a Trump card ?
Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 6:51 pm
by Andy Rea
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
Re: A poorly Zeddy
Posted: Tue Sep 26, 2017 11:37 pm
by gammaray
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?
Re: A poorly Zeddy
Posted: Wed Sep 27, 2017 6:57 am
by mrtinb
Andy Rea wrote: ↑Mon Sep 25, 2017 10:33 pm
not much progress but it hasn't been forgotten...
can you tell what it is yet ?
To me it seems the bottom pcb is missing alle the capacitors, diodes etc. Strange?
Re: A poorly Zeddy
Posted: Wed Sep 27, 2017 12:27 pm
by Moggy
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)
Re: A poorly Zeddy
Posted: Wed Sep 27, 2017 11:42 pm
by Andy Rea
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
Re: A poorly Zeddy
Posted: Thu Sep 28, 2017 1:10 am
by gammaray
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!