Epson HX-20 - Collective brain help required :)

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stephen_usher
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Re: Epson HX-20 - Collective brain help required :)

Post by stephen_usher »

Excellent news.
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: Epson HX-20 - Collective brain help required :)

Post by rubber_jonnie »

HigashiJun wrote: 26 May 2026 23:45
rubber_jonnie wrote: 26 May 2026 18:29 OMG!!!

Machine 2 is working!!!
:cheer: :girldance: :cheer:
That's definitely how I felt 😁
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: Epson HX-20 - Collective brain help required :)

Post by rubber_jonnie »

stephen_usher wrote: 27 May 2026 07:56 Excellent news.
For sure.

Hopefully it'll help me with getting the original machine working again now I have a known good reference to work from.

I should also be able to verify which of the two identically marked CPUs is the 2nd CPU which has a baked in mask ROM which will help. At least I hope it will!
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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Posts: 14902
Joined: 17 Aug 2017 19:40
Location: Essex

Re: Epson HX-20 - Collective brain help required :)

Post by rubber_jonnie »

OK, this is driving me bonkers. The working machine is now doing nothing, not a solitary beep when powered on. It was working first thing


Gaaaaaaaaaaaaaaahhhhhhh!!!!
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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