Search results

  1. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    Well, that certainly wasn't the ugliest part, but details on that upcoming and in progress details of these pics later. Never got the desk reassembled, but it was a very good day in that room and out on the terrace with the power tools. So a wrapup of today's progress before I do a TLDR detailed...
  2. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Connectors are always expensive. I say go SMT with SIMMS by beveling the edge at 45 degrees. It should be easy enough for me to come up with a jig for using the Dremel everyone but me seems to have. One part holds the Dremel at that angle and the second would be a slide setup that mates with the...
  3. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    I've looked at the only two(?) types of DIMM modules that support DRAM, they utilize FPM DRAM. Chunking their 64bit data path down to two 32bit memory banks would be like installing a pair of 72pin SIMMs. 72/144 and 100/200 packages exist, dunno how many are out there by now and the latter may...
  4. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    Enough for one day. This is what happens when you knock something together with a screw here, a screw there and three or four under the hidden corner. Pull it apart, you've got one mess and a boo boo on your thumb when the desktop decided to head toward the floor. Time to square things up and...
  5. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    I like it, but still wondering how the memory map works out. Did you catch my PM? The Sonora Memory Controller in the LCIII looks to be Apple's first run at the DRAM control line core of the next gen MEMCjr Controller for Q605/LC475 and related to C610 and C650. So you may be headed toward a...
  6. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    Found a mid-teardown pic of the corner with bookcase support for full length shelf on desk end of room. Desk's re-positioned under the curvacious upper layer. Rack's still in place, desk belongs along wall in between. Here's where I reached my decision point, Radius StudioArray test fail...
  7. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    Thanks! I'll try to find some before pics today, maybe you'll find those useful as well. I figured documenting my wood butchering might be helpful. I also do fine woodworking, I'll post examples of furniture building, two of them were underneath the raised section, one will be heading back.
  8. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    You nailed it, trace paths would be impossible to overcome. In an analog system with few traces it would be one thing I guess. The good thing about a surface mount bodge is that the conversion frees up the entire trace side for its contorted flip-flopping. < tangent > It hasn't, but it sits...
  9. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    Forgot to mention that the point of the exercise is to make the room useful for the 7-24 months I'll be here without spending much real money. I have a lot of lumber, plywood, cutoffs and scrap squirreled away in the walk in closet and other hidey holes. Wanna use as much of it up as I can so it...
  10. Trash80toG4

    Rebuilding the ComputerLab from spare leftovers and scrap . . .

    I've mentioned the flood that ruined all the carpet in my ground floor apartment here and there. In the show your desk thread I documented some of the in process changes to what remained of the setup. Here's the low rent rebuild, sans the nice seven foot bookcases that supported what I'm...
  11. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Just noticed I ran the SIMMs right through the adapter in that sketch. OOPSIE! :oops: edit: just checked, I didn't do that, did you edit it like that? < tangent > Cool looking setup for the -SE40- are you planning an LCD? All I saw was that one pic. If you wanna wade through some awful .TXT...
  12. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    No worries about breaking the solder joints, the printed supports would be installed before soldering with good contact. Mounting screws are smaller diameter than the holes in the SIMM's for finagle factor. Holes in SIMMs can be drilled out to larger diameter if necessary or advisable overall...
  13. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Thanks, it's been a long time coming! No need for slotting in config above, or maybe I don't understand your question? I've been looking for my SIMMspender project box to no avail, but I just developed a suspicion about where it might be now that I stopped thinking about it. I have one very...
  14. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Got a pic? My LCIII is out on loan . . . forever it seems. :( Quadra 630 project predates Section 8 AWOL MIA period and Quadra 605 riff was after I popped back in, but predates general availability of filimant printing technology. Switching the design up for SMT bodge of SIMMs/Adapter...
  15. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    If you're concerned about height, the SIMMs can be soldered directly to the adapter. 😉
  16. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Is the LCIII SIMM oriented straight up or angled? SIMMspender above does exactly what you're suggesting in my target machines.
  17. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    SIMMsppender can be extended to left or right using a modified 72pin form factor. ;) OMG, I so wish I had my Quadra 630 board to do this. It should have the full memory ceiling, greater than the two SIMM Slotted DOS boards when I get done with it. 🤪
  18. Trash80toG4

    Breaking the 36MB RAM limit on the LCIII

    Very cool. Love your incredible research results. I've had some trouble describing this setup to you in words, so did a sketch this morning. Don't know if it'll fit in the LCIII, but Quadra project might be worth a look? SIMMspender is the inverse of a SIMMsaver. It consists of a passive...
  19. Trash80toG4

    What are your vintage grail items?

    Wow! What a great story. Are you still working at Goddard or elsewhere for NASA? I wonder how many IIfx were scattered about the agency? A VERY cool customized case IIfx that a Mission Specialist used popped up somewhere or other fairly recently. What a gem, I snagged every pic available of it...
  20. Trash80toG4

    What are your vintage grail items?

    It's truly a thing of beauty, no? Nope, never seen this unicorn nor heard tell of anyone hoarding one, but I have collected quite a few pics from many angles. I think I may already have posted too many in progress and Hack Proposals I think? I'd love to document this masked/secret/stealth...