DaveC's H5 C1 Build

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stephen_usher
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Re: DaveC's H5 C1 Build

Post by stephen_usher »

:dualthumbup: :yay2: :cheer: :yay: :girldance:
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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JezC
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Re: DaveC's H5 C1 Build

Post by JezC »

:cheers: :bravo:
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JezC
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Re: DaveC's H5 C1 Build

Post by JezC »

PhilC wrote: Wed Jul 14, 2021 7:45 pm @JezC it depends on what you want to fit. I fitted a ds1315 clock chip, oscillator etc and will put jumpers on the flashy clock socket but just temporarily I've bridged the middle two with solder.
@PhilC ah, good to know. Might need some clarification for what is needed for the different build options.
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Re: DaveC's H5 C1 Build

Post by DaveC »

PhilC wrote: Wed Jul 14, 2021 8:56 pm :cheer: :cheer: :cheer: Well done. Fun but easy wasn't it :)
Yeah, was definitely less than 2 hours work. I mean the parts turned up around 1.30, mid lunch and had to pick kids up from school too.

Think the difficult part was removing the PLCC chips from donor board as they both stuck in one corner! Oh and obviously not jumping those 2 bits :roll:
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Re: DaveC's H5 C1 Build

Post by DaveC »

DSC_1795.JPG
DSC_1795.JPG (144.43 KiB) Viewed 2890 times

Definitely have some sort of problem, get bombs when it tries to read a disk. Whether from boot up or desktop.
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stephen_usher
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Re: DaveC's H5 C1 Build

Post by stephen_usher »

Address line issue? From the screen corruption.
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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PhilC
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Re: DaveC's H5 C1 Build

Post by PhilC »

@DaveC have a look at your DMA and WD1772, also try reseating your GLUE and see if this helps. The board itself is very nearly plug and play, so its likely some bad connection.
If it ain't broke, test it to Destruction.
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exxos
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Re: DaveC's H5 C1 Build

Post by exxos »

Run YAART and see if the RAM is OK.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: DaveC's H5 C1 Build

Post by DaveC »

YAART doesn't give any errors.

Diagnostic cart gives this for most of the floppy tests.

Code: Select all

EB Bus Error  Access Address: 4E4E50 Program Counter: 4E4E50
EB Bus Error  Access Address: 4E4E50 Program Counter: FA0E88

Originally sound test didn't work but sounds fine after applying the audio fix.

Tried reseating most of the chips. Swapped the WD1772 as I had known working one in my STe.

Be interesting to see what @JezC gets when he tests with the cartridge!
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Re: DaveC's H5 C1 Build

Post by exxos »

I would re-seat / resolder the GLUE...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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