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STE 'Bad' DMA fix board

General discussions or ideas about hardware.
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vertical
Posts: 15
Joined: Fri Jun 04, 2021 12:50 pm

STE 'Bad' DMA fix board

Post by vertical »

I bought this recently. It turns a 'Bad' DMA (C025913-38) to a good one (C398739-001A). Since I have been following this for sometime but not for the last couple of years (I saw some updates) and after not having issues (I did the CPU change and full recap of PSU), will this actually help? (I was wondering to bring back the original CPU). Has anyone tried it or have an idea if it works?

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Steve
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Re: STE 'Bad' DMA fix board

Post by Steve »

"After not having issues" / "will this actually help?"

If you don't have issues, what is there to help? Sorry for being a smartass lol.
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rubber_jonnie
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Re: STE 'Bad' DMA fix board

Post by rubber_jonnie »

I'm kinda with Steve on this.

If you're not having issues, how will you measure any difference if you don't have any issues? If the machine is running fine, why fiddle with it?

Do you have any links to the item as I think we'd all like to see the thoughts behind it.
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...
vertical
Posts: 15
Joined: Fri Jun 04, 2021 12:50 pm

Re: STE 'Bad' DMA fix board

Post by vertical »

Steve wrote: Wed May 01, 2024 4:57 pm "After not having issues" / "will this actually help?"

If you don't have issues, what is there to help? Sorry for being a smartass lol.
Well, it's being a long since I did a mod on my STE! :lol: But yes, you got a point. If it works, don't touch it. I also read that some people installed it, nothing changed, but as soon as they changed the CPU, they got away with the DMA issues.
Dlfrsilver
Posts: 87
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Re: STE 'Bad' DMA fix board

Post by Dlfrsilver »

vertical wrote: Thu May 02, 2024 6:07 pm
Steve wrote: Wed May 01, 2024 4:57 pm "After not having issues" / "will this actually help?"

If you don't have issues, what is there to help? Sorry for being a smartass lol.
Well, it's being a long since I did a mod on my STE! :lol: But yes, you got a point. If it works, don't touch it. I also read that some people installed it, nothing changed, but as soon as they changed the CPU, they got away with the DMA issues.
That's correct, that's what i noticed for my part. As soon as the CPU was changed, the DMA problem disappeared. I precise that beforehand, i changed the DMA chip for the latest for STE made by Atari, but it was not enough.
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