Atari 520 STE Harddrive (ACSI2STM project) not detected at all

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p0ke
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Re: Atari 520 STE Harddrive (ACSI2STM project) not detected at all

Post by p0ke »

I tried one sd card with image of acsi harddrive volume on it, and one with standard fat32 and files.
But, I have been told that even without sdcard, acsi2stm device should blink orange led, but here it doesn't at all.

I have switch 1772 between two atari, one is atari branded one is not.
But it does not change anything.

Waiting my parcel with the resistors to do the pullup stuff.

Thanks a lot for sharing your experience and idea, that's nice.
p0ke
Posts: 12
Joined: Mon Jan 02, 2023 3:06 pm

Re: Atari 520 STE Harddrive (ACSI2STM project) not detected at all

Post by p0ke »

Latest attempt.
I rebuild the firmware and I did put it in debug mode.
It appears that the device is awaiting acsi bus, I have the following message :

"-> Waiting for the ACSI bus ..."

it seems like the hardware is not talking to acsi2stm.

I'll keep tweaking firmware and looking for an hardware issue.

any idea welcome !
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rubber_jonnie
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Re: Atari 520 STE Harddrive (ACSI2STM project) not detected at all

Post by rubber_jonnie »

Out of curiosity, did you build this yourself?

I helped somebody last year with an ACSI2STM problem and the BluePill was fake.

Now his didn't work at all, but when testing it appeared to do something from the log perspective, and that was with an STE too.

Have a look here: Fake BluePill

It seems that the fakes do have varying degrees of functionality as mine kind of worked in my BlueSCSI devices.

Worth checking to see if it is a genuine BluePill.
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...
p0ke
Posts: 12
Joined: Mon Jan 02, 2023 3:06 pm

Re: Atari 520 STE Harddrive (ACSI2STM project) not detected at all

Post by p0ke »

rubber_jonnie wrote: Sun Feb 11, 2024 10:45 am Out of curiosity, did you build this yourself?

I helped somebody last year with an ACSI2STM problem and the BluePill was fake.

Now his didn't work at all, but when testing it appeared to do something from the log perspective, and that was with an STE too.

Have a look here: Fake BluePill

It seems that the fakes do have varying degrees of functionality as mine kind of worked in my BlueSCSI devices.

Worth checking to see if it is a genuine BluePill.
Hello rubber_jonnie,

No I did not build it by myself. Thanks for suggesting the idea. I have two (one blue pill and one made in factory with smd like this one Image). One tested works fine with other atari ste but not this one.

I am applying the fix from Exxos on dma, 1772 and so on. I have the bus resistance to apply in the hope that'll fix dma behavior.

I notice that I have the patched motherboard revision (with the 74LS build above another one near the ram). The one that use to work with does not has this patch. I wonder if there is something there.
From the asc2stm device I notice that I do not receive the command from DMA. (so either it sends too fast or too slow ?).

Will update soon.
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