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Paralel

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Everything posted by Paralel

  1. From what I've read Newer Technologies was able to essentially drop in a 740 G3 in place of a 603e processor on one of their blackbird CPU daughterboards because they are apparently fully pin-compatible, However, by the time their 740 G3 prototypes were completed, the interfaces for the CPU daughterboards were no longer being produced, so the project was dead in the water. Also, apparently in Japan, a guy was able to take a Newer Technology NuPower 167 Mhz CPU daughtercard, pop off the 603e, drop a 740 G3 in its place, and it worked without any difficulty. From what I can tell, the PPC740L would be a drop-in replacement for the 603e. What do you guys think? Based on this datasheet: http://datasheets.chipdb.org/IBM/PowerPC/7xx/PowerPC-740-750.pdf Would creating a PPC740L G3 CPU Daughterboard For Blackbird Powerbooks using a Newer Technology NuPower 167 CPU daughtercard as a base work? What frequency do you think we could get it to work at? Also, do you think it would be need active cooling? I'm thinking yes. As such, do you think that would be difficult to implement given the space constraints in the blackbird?
  2. Understanding the "black box" that is the "PBX" chip is indeed the only way forward. The fact that the 3rd party processor upgrades needed them proves that even these companies were locked into using Apple parts. It's too bad Apple wasn't more open about their old chips. Like they would ever need to use a PBX type design again.
  3. Unfortunately, Plan A was a complete failure. Transplanting the G3 onto the NuPower 603ev-based CPU daughterboard was unsuccessful in the most fundamental sense. Once on the daughterboard, the system did not recognize the G3, regardless of what was tried. It acted like it would if no CPU was present. This really left us with nowhere to go, since one can't really proceed to diagnose an error state when the error is so fundamental that one cannot talk to the hardware in question. So, the only hope of ever seeing a G3 in a Blackbird is to go to Plan B, making a new daughterboard. As one can imagine, this is a monumental undertaking. One, at the moment, I am in no position to undertake. I have more things in my life to handle than I have time for as it is, so this may happen some day in the very distant future, but certainly no time soon. I thank all of you that were interested in this project for your assistance and feedback, Profound appreciation and unending gratitude go to CC_333 for providing the NuPower daughterboard, and Bolle for providing his services to transplant the G3 onto said board for testing. Without them, this theory never could have been tested. I am forever in debt to both of you for your efforts regarding this project. I am sincerely sorry that the outcome was not better.
  4. Paralel

    Yellowed(brown?) Performa 550

    The brown proves that once they are yellow from photolytic breakdown of the fire retardants, they subsequently oxidize, with the final color being a medium brown. It makes sense. Yellow chromophores almost universally become brown as a result of subsequent oxidation. That would make heat your worst enemy once they have turned yellow, since that would accelerate the oxidative process. The good thing is that we can be sure the final color is brown, oxidation should reduce the chromophore to its base energy state, where it doesn't respond to any further processes.
  5. Paralel

    China Ebay 68040 processor

    Talk about a kick in the ass. Asking you to return the fake. I'd ship him a cat turd.
  6. You're right, JDW. It's a problem that has no good solution. You need contact on both sides, so shifting to one side or the other, like with a shim or a rubber band is not a solution. A shim on each side leaves you in the same position you're in now, poor contact on either or both sides due to the board not being thick enough. I think solder could work, you would just need to add solder, then subtract from it by removing very small layers, until you are within that tolerance range. It's a time consuming solution, but I honestly can't think of anything else. It's a nasty situation.
  7. I would suggest imaging the disk, so you can always try and crack the password on it later, if you want to use the drive now. No reason you can't have your cake and eat it too.
  8. Paralel

    Color Classic VGA Mod. the CORRECT way

    Also, it shouldn't be possible to do 640x480 @ 16-bit. That would be 614.4k of VRAM. The most you can have in a CC is 512k. How does the system handle the difference in available vs. needed VRAM? Does it dip into system memory? Is it even capable of doing that? It doesn't seem likely, since the default video modes for the CC all fit easily within the maximum available VRAM.
  9. Paralel

    Unique Japanese Mac Plus ROM?

    Nope. My Japanese isn't strong enough to parse out the proper search phrasing, and I wouldn't trust an auto-translator.
  10. Paralel

    Color Classic VGA Mod. the CORRECT way

    Is it just the pic, or do you have some serious barrel distortion going on?
  11. Give Linux a shot, it might not respect the behavior of the SL sofware password limitations.
  12. Paralel

    Unique Japanese Mac Plus ROM?

    Good question. From a quick look around, not that I can tell.
  13. Paralel

    Rescuing my dad's Classic II, last working in 1996

    Yep. However, Alaska360 and I made an FPU/ROM expansion card for the Classic II, and you can burn updated System Rom's to allow for booting from the ROM expansion. But that's about it.
  14. Paralel

    Molar Mac!

    I like the cat, he's looking at it like "Can I fits and sits?"
  15. Paralel

    Rescuing my dad's Classic II, last working in 1996

    ROM boot? On a Classic II?
  16. Paralel

    Help identifying Lapis PDS card.

    Googling the part number did no good?
  17. Paralel

    Best macOS version for IIci?

    7.1.2-68k (BTW there was a Finder version 7.1.3, but never a System Software version 7.1.3. It's either 7.1, 7.1.1, 7.1.2-68K, then it jumps to 7.5)
  18. Paralel

    What is this/how does it work?

    It allows output to a 1-bit monitor that is specifically paired with it. If I remember correctly, if you don't have the specific monitor that goes with it, its useless
  19. Paralel

    Sad Mac error code on SE/30 with SCSI2SD

    You and me both.
  20. Paralel

    Sad Mac error code on SE/30 with SCSI2SD

    Since when can we delete threads?
  21. Paralel

    Powerbook 540c won't startup

    That's rather odd.
  22. Paralel

    The Newest ImageWriter II?

    In addition, if you could take a pic showing the date, that would be appreciated.
  23. I guess the only way to settle the matter of what processor is in a given system is a to take a pic. If the processor in said system is a 7448, it will be obvious, and there are enough people that work with static and motion media around here that we could collectively sniff out a fake a mile away. Edit: Nevermind, saw the most pathetic photochop in the world over in the MR thread. That's the end of that story.
  24. Paralel

    PowerBook 550c

    Thank you for the reply. I have considered you sort of the final authority around here on 550c systems. Your input has left me with no doubt regarding the answer to my question.
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