General Stuff(tm)

Blogs & guides and tales of woo by forum members.
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

I think this is as close as I'm going to get to the original.

IMG_4838.jpeg
P.S. In lieu of silver paper, a grey background...

That'll do, Donkey. That'll do.

IMG_4839.jpeg
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Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: 19 Dec 2025 22:07 I think that the XL machines look the best in terms of the 8 bit machines.

They're more compact than the originals and have their own style, unlike the XE machines which look like cut down STs.

Anyway, A8PicoCart and FujiNet ordered now I have a known working machine. :-)
Nice, they are a great machine and the Pico/Fujinet combo will be good.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: 21 Dec 2025 12:27 I think this is as close as I'm going to get to the original.


IMG_4838.jpeg

P.S. In lieu of silver paper, a grey background...

That'll do, Donkey. That'll do.


IMG_4839.jpeg
Looking good :)
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

The solver paper arrived so I made the new badge...

IMG_4841.jpeg
IMG_4840.jpeg

Doesn't look too bad at all. A little bit too shiny and not "brushed aluminium" but pretty close to the original. Close enough to look the part and if you weren't looking for the it no notice the difference.
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Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

The machine became unstable again, with corrupted screen and then just crashing on power-up so I took it apart... T'was the GTIA again with a poor connection.

I re-scraped the chip legs, bent them inwards and added some more Electrolube to the socket. Hopefully that will keep a decent contact now. While I had the machine apart I did the same to the other socketed chips.

All seems fine again now and I'm re-running the soak test.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

And after about 10 minutes it failed again.

I've now taken it apart again and scraped the tarnish off the socket wipers with a jeweller's screwdriver.

I've not reassembled it again but I'm running the soak test.

Unfortunately I've only turned pin sockets of that size and old PCBs and turned pin sockets don't mix well.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

Seems to be stable again now. I can prod, pull, rock etc. the GTIA chip and the machine keeps running. So I've put it back together. Whether it'll be reliable only time will tell.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
User avatar
rubber_jonnie
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Posts: 14888
Joined: 17 Aug 2017 19:40
Location: Essex

Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: 22 Dec 2025 18:59 Seems to be stable again now. I can prod, pull, rock etc. the GTIA chip and the machine keeps running. So I've put it back together. Whether it'll be reliable only time will tell.
Fingers crossed :)
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
User avatar
stephen_usher
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Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

I ran the machine for 8 hours straight with the self-test and it was fine. So, it's probably OK.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
User avatar
stephen_usher
Site sponsor
Site sponsor
Posts: 7376
Joined: 13 Nov 2017 19:19
Location: Oxford, UK.

Re: General Stuff(tm)

Post by stephen_usher »

It's still working!
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.

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