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nickpunt

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  1. nickpunt

    is this card anything special?

    Looks like a dual PDS riser card for IIsi. Supermac made one as well, I believe it may have been bundled with their video cards. Best guess is another video card manufacturer made yours (rasterops?). Here's pics of mine. In the past I've seen the Supermac dual PDS card go for $20ish, probably same one Trash80 saw.
  2. nickpunt

    Carrera040 Info / Hacking Thread

    This is fascinating stuff @GeekDot! You're right about the brain implosion, machine code like this is beyond me. I enjoy reading comments in code though, its like a real time way of seeing your work & thought process. Pretty fascinating how each different machine it supports has special nuances & features, hopefully the overlap of code handling non-32bit clean, ram-based video, and pds can be cobbled together Good luck!
  3. nickpunt

    Sonnet Quaddoubler project

    Seems they made a few different versions of the QuadDoubler that were rotated in different directions to accommodate different systems (according to Amiga Hardware Database): > available in different pin orientations - the QuadDobler model number BSW2001004950 installs parallel over the A3640 Different part #s I've seen (mentioned here, and on Sonnet's page here and here): BST-40F - Centris 610 (and presumably Quadra Workgroup Server 60/20) BST-50FA (BSW2001004950) - Quadra 610 Workgroup Server 60/25, also Amiga A3640 & "X-Calibur" BST-50FB - 100/50Mhz Quadra 660AV, 700, 900, Centris 660AV BST-50FC - Centris 650 Presumably by looking at Mac models you'd be able to determine how they're rotated to fit in the chassis. As far as rarity - good luck. Saw one at beginning of last year, and one at beginning of this year, and that's it. I missed getting those, been trying to get my hands on one for a long time. Attached are some images I've collected of ones in the wild over the years, maybe they'll help your search: From an eBay listing 2018 Feb by taddy-izumi From ?? From someone on reddit a few years back: From Quadra 700 listing 2019 Jan: This old thread now since lost in 68kmla transition had some images of an attempt to put one in a Performa 630. I believe this was @johnklos. Notice the addition of spacers, and the "spectrum engineering" label: Mentioned by @nglevin, this is actually the Newer Technology Quadra Overdrive. According to this post on AF, it came in a regular and PLUS version, the latter having L2 cache (!).
  4. nickpunt

    Carrera040 Info / Hacking Thread

    Nice work @GeekDot! Good idea to publish this in a better format. Look forward to seeing how this progresses
  5. @techknight 68k.io is a simple page that hits the Spotify API to grab a short code that you need to confirm your device's authorization. Seems you'd need to be logged into Spotify via your browser and then 68k.io just displays a page to grab the short key to confirm connection. That requires HTTPS & modern web browser as Ants mentioned. It doesn't look like it stores credentials or anything.
  6. Brilliant! I was waiting for this to drop since you mentioned it. Congrats on the build. Seems with the Oauth flow you've paved the way for a few more services too. Re: Spotify connect device, looks like that would include Raspberry Pi as well - https://github.com/dtcooper/raspotify @nglevin yep looks like it was built in Retro68 according to the GitHub readme https://github.com/antscode/MacPlayer
  7. nickpunt

    Orange Micro NuBus PC Card - Need Help

    Ok so VGA and VRAM is on-board. Am I right in assuming the visual artifacts are likely VRAM related then? I've read about something like this happening before from other vintage hardware, but want to isolate the problem best I can before I go looking for new chips & someone to fix it. Thanks!
  8. nickpunt

    Orange Micro NuBus PC Card - Need Help

    Same issue with the original 486dx2-66 (the solitaire image was from that). Interesting I didn't realize it used internal video but that makes sense.. I figured the two large chips to the bottom right of the 486 were VRAM but I guess they're the 128k cache the card comes with. Sounds like I should swap back in the dx2 and see if the A20 error comes up again. I can also swap the RAM, haven't tried that. Any other ideas?
  9. nickpunt

    Orange Micro NuBus PC Card - Need Help

    Necro'ing this thread for a related question. I've got the same card (OrangePC 290) and I'm seeing visual artifacts appear soon after opening any program with graphics (e.g. Windows 3.1, Simcity). My guess is this is a VRAM issue, but I haven't stress tested this card to know if this happens after a while in DOS as well. Any ideas? Would I have to resolder new VRAM chips on? Note on the 'A20 Hardware Error', I think that's from swapping in a 486 overdrive instead of 486dx2-66 rather than the video issue, but that's just a guess.
  10. nickpunt

    Modern PSU for the SE/30

    Looks great @JDW, thanks for the thorough walkthrough!
  11. nickpunt

    Multiprocessor SE/30!

    @Gorgonops this reminds me of something I read the other day about the 040 and the 68882: https://en.wikipedia.org/wiki/Motorola_68040 Unfortunately, the 68040 ran into the transistor budget limit early in design. While the MMU did not take many transistors—indeed, having it on the same die as the CPU actually saved on transistors—the FPU certainly did. Motorola's 68882 external FPU was known as a very high performance unit and Motorola did not wish to risk integrators using the "LC" version with a 68882 instead of the more profitable full "RC" unit. (For information on Motorola's multiprocessing model with the 680x0 series, see Motorola 68020.) The FPU in the 68040 was thus made incapable of IEEE transcendental functions, which had been supported by both the 68881 and 68882 and were used by the popular fractal generating software of the time and little else. The Motorola floating point support package (FPSP) emulated these instructions in software under interrupt. As this was an exception handler, heavy use of the transcendental functions caused severe performance penalties.
  12. nickpunt

    Multiprocessor SE/30!

    @Von the first photo is just a joke, it's a Turbo040 -> daystar IIcx adapter (fake) plugged into -> socketed daystar board. And then another daystar 030 accelerator -> micromac PDS adapter -> MacCon. I tried for maximal ridiculousness @Gorgonops this is what I was thinking - the socketed daystar just works without any drivers or anything. 030 accelerators don't seem to modify the ROM in any way (hence they can use the ROMinator II no problem). Any non-030 accelerators both modify the ROM and have some degree of software control, and there's precedent to having software disable accelerators entirely. MicroMac Carrera040 has a control panel with a switch to turn it to 'slow' which disabled the processor. In the FAQ, they state: Q: I currently have a FPU installed, can I still use this FPU once I installed the Accelerator? A: No, once the Accelerator is active, it will disable the CPU and the FPU you have on your logic board. Turbo601 as @Von points out can be disabled. Turbo040 has Daystar QuadControl you can disable application caching, PowerMath, Secondary Cache Control. Maybe all of those together would potentially just disable the accelerator entirely? Sometimes software is written in a way that doesn't explain its exact function, and QuadControl's options might be one of these situations. One interesting thing is that there's different software for 030 and 040 daystar accelerators. The 030 uses PowerCentral, while the 040 uses QuadControl. PowerCentral has two on/off switches for cache and FPU: This doesn't suggest the accelerator CPU can be disabled. In the case of the socketed SE/30 powercache, that would lead to not having a CPU at all, so probably a good idea not to have that option Order of operations 1. Electrical - can they be plugged in together without magic smoke? 2. CPU Bus - does the computer know which CPU to send stuff to? 3. Drivers - is it possible to change options in the 040 such that disabling those will fall back to the 030? #1 my guess is it won't make smoke. #2 seems kind of suspect. but, given only the 040 is modifying the ROM, it may mean its pointing to the 040 first. #3 raises the question whether disabling the 040 FPU/cache falls back to the PowerCache 50mhz FPU/cache, or simply disabling both accelerators FPU/cache. Probably depends how the control panels are written. In fact, the computer may refuse to boot simply if you have both QuadControl and PowerCentral active. But I'm still hesitant to run the experiment
  13. nickpunt

    Multiprocessor SE/30!

    "Scientists were so preoccupied with whether they or not they could, they didn't stop to think if they should" In all seriousness though, has anyone ever attempted to put two accelerators in an SE/30? For example, a socketed powercache and a turbo 68040: I have no particular desire to be the first to attempt it as I don't want to see two extremely valuable parts go up in smoke, but my understanding is the Turbo040 can be enabled / disabled in software, so if this configuration worked electrically & in drivers, you could have the best of both worlds in software compatibility, given some software works better on 030s than 040s. My guess is daystar software would be rather confused by this whole arrangement, but who knows?
  14. nickpunt

    Modern PSU for the SE/30

    I wouldn't trust myself to build this successfully but if someone were doing the project and wanted to make an extra seasonic one, I'd be happy to pay for time + materials for one!
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