JezC wrote: Fri Mar 24, 2023 9:51 pm Now, if that was shades of pink rather than purple, you might have @exxos claiming that for his own!![]()
Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)
It helps build a picture where our "good traffic" is coming from..
Thanks :)
stween's build
- stephen_usher
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- Posts: 7464
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- Location: Oxford, UK.
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Re: stween's build
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.
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.
Re: stween's build
And we are booting properly. Along with all the changes the SIMM slot replacement brought this board to life. The purple colour video in the previous post was a combination of the DAC jumpers and my RGB cable setup.
Now to start tidying and placing components back on the board.
Now to start tidying and placing components back on the board.
Re: stween's build
@Icky nice to see it up and running at last, although I did prefer the purple 
If it ain't broke, test it to Destruction.
Re: stween's build
Another H5 joins the land of the living

- stephen_usher
- Site sponsor

- Posts: 7464
- Joined: Mon Nov 13, 2017 7:19 pm
- Location: Oxford, UK.
- Contact:
Re: stween's build
Good-oh!
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.
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.
Re: stween's build
Everything is back in place and cleaned up. I have added in a few sockets and headers, plus I have several battery cell holders and a crystal for the RTC clock circuit so put them in. @stween you only need to find the RTC chip.
First patches in place with the inductors on the 3V3 <-> 5V translators replaced with 220K resistors is done. Now to do the rest such as the audio fixes.
First patches in place with the inductors on the 3V3 <-> 5V translators replaced with 220K resistors is done. Now to do the rest such as the audio fixes.
Re: stween's build
Wonderfully good! I'm looking forward to getting my board through a full boot cycle for the first time 
Re: stween's build
Yes, when you get this running we need to see your favourite game demoedstween wrote: Sat Apr 01, 2023 3:09 pm Wonderfully good! I'm looking forward to getting my board through a full boot cycle for the first time![]()
Re: stween's build
Listing all the fixes going onto the board and status:
- COMPLETE - H5 C1 3.3v bus fix
- COMPLETE - H5 C1 YM AUDIO FIX
- COMPLETE - C1 AUDIO FIX - FLOPPY NOISE ISSUES
- COMPLETE - 32Mhz OSC fix.
- COMPLETE - H4 & H5 series BGACK pullup update fix
Re: stween's build
Board has been on GEMBench loop for over 24 hours now and no glitches so I deem that as a working board. Just need to test out the audio patches work.

