• Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.

Search results

  1. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    I'm kind of wondering about the mention of ground connection, the Macintosh SE/30 schematic does say that hot and cold ground are connected together, is this also the same with the Macintosh SE or are they kept separate?  I've assumed that the wire to the chassis connected it to protective...
  2. quorten

    Replica boxing for Macintosh SE

    Here's a direct link to the photos upon which the box design is based. https://drive.google.com/drive/folders/1VzPV8MtS3qOpWC62HtaMCkKF6aeY0b5S?usp=sharing
  3. quorten

    Eric's conquests

    Alright, @erichelgeson I started playing around with the information in the photos, and I'm convinced... that I'll be willing to eventually take the box away from you.  Just trying to pace myself when I say this... I'd like to prove to myself I make reasonable progress on the project so that...
  4. quorten

    Replica boxing for Macintosh SE

    Hi folks, I own a Macintosh SE that was surplus-sold by Boeing in 1997, and like many surplused computers, it was just picked up off a table without any provision for pristine boxing/packaging to protect it during shipping.  So, I've wondered for quite a while what the original package...
  5. quorten

    Macintosh SE/30 Schematics (modernization effort)

    Oh yeah, now that we have the circuit board layer photos, we can fill in schematics for those missing sound interface TEST circuits that place additional components on the board.  That can go on the currently blank page 9.
  6. quorten

    Macintosh SE/30 Schematics (modernization effort)

    Oh, about pin 7, this doesn't look to be connected straight to ground, looks like it connects to ground via a capacitor, and that is correctly in the redrawn schematics.
  7. quorten

    Macintosh SE/30 Schematics (modernization effort)

    @ttb In my opinion, I'm just fine if you drop comments here about things to fix.  One way or another, these kinds of developments will require discussions with pictures to point things out, and either we have those discussions here on 68kMLA or on GitHub. I've made the update to the schematics...
  8. quorten

    Eric's conquests

    Cool, I sent a note to ask for permission to access, hopefully it should be straightforward to identify as me. Box dimensions, wow, they must have originally packed up that machine as if it were worth $3000 today... which it pretty much was at the time.  I'll look around at this box and let you...
  9. quorten

    Not a mac, but 68k powered

    Those RAM sticks appear quite unconventional, they stack both EPROM/ROM and RAM together on the same stick.  They have two different types of RAM chips on there, the first kind is uses 1-bit wide words, 4 teamed together, the second kind uses 16-bit wide words.  All chips have about 1 million...
  10. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    Looking pretty good, with a few more photos someone would be able to run and do another PCB layout for the Macintosh SE/30 main logic board!  No need to wait around for the Macintosh SE boards to be finished.  Mentioning that, it would also be really helpful for making improvements to the...
  11. quorten

    Macintosh SE/30 Schematics (modernization effort)

    @davidg5678 I see a switch on the same page as the GLU, labeled as S2 NMI, this is the programmer's switch I've verified from logic board photos.  Good note about the circuits not mentioned in the original schematics, right now I don't have much info to add more about that into the schematics...
  12. quorten

    Eric's conquests

    ScutBoy, at the moment I'm mainly interested in Macintosh SE boxing, simply because a Macintosh SE is the only vintage Macintosh I have on hand at the moment.  But, now that you mention it, I might also be interested in the Plus and 512k.  Something for me to think about more on that point.
  13. quorten

    Eric's conquests

    Sure, I'd be interested in some high res photos of the each side outside and insides.  That's as good a start as any for me.  Also, do you have an idea on the specs of the cardboard used? EDIT: Box dimension measurements would also be nice.
  14. quorten

    Trouble dealing with a local seller with a massive hoard

    Congrats!  Really good to hear that.  I thought I wasn't going to say this so soon, but because of the good fortune I'm going to... as long as she's still healthy and well, nothing is final and the end yet.
  15. quorten

    Eric's conquests

    You have the original boxing for a Macintosh SE?  I was thinking it might be a fine idea to create replica original boxing for a Macintosh SE, or at the very least, have good digital models on-hand.  How do the internal structures for packaging/styrofoam look like?  I'm guessing it was supposed...
  16. quorten

    Macintosh SE/30 Schematics (modernization effort)

    @elemenoh Looks like there's a few outstanding improvements over the past few weeks that you haven't incorporated into your GitHub version yet.  Just wondering, putting this out as an idea, would you rather prefer collaborators on your master repo as opposed to forks and pull requests?  It...
  17. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    You could tentatively count me if you're taking tentative counts.  I'm still working through a different soldering project to prove to myself I'm not too much of a soldering newbie when it comes to soldering complex "computer-grade" electronics with lots of through-hole connections. Yeah, still...
  18. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    Interesting you mentioned it, I'm in the software development/engineering field, and I am also unemployed.  I could say a lot here but I'll try to keep it short.  It's been pretty interesting to unravel exactly what is going on, but short answer is, there has been a lot of "lying with...
  19. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    Considering the point that all moderator decisions are final, I'd probably defer to an admin/moderator to fully answer the question (as it seems you're also assuming), but looks like there were no admins/moderators who were eager to add themselves as followers directly to this thread.  You could...
  20. quorten

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    Cool, really glad to know that TechKnight was right.  I was also thinking similar based off of anecdotal evidence about what happened after I jammed a floppy disk into a Macintosh SE upside down and backwards over 20 years ago, but I thought it would sound too silly to try to mention that and...
Back
Top