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  1. M

    Breaking the 36MB RAM limit on the LCIII

    Ooh, now what would be really cool would be to just make a SIMM with two 72pin sockets but that tab would still get in the way.... though it might be possible to slide the board in than install the RAM mmodules. First off we would need to actually see if this mod will work on the CCII, I'm...
  2. M

    Breaking the 36MB RAM limit on the LCIII

    Took me a while but I just measured the SIMM, it's just about 43mm high
  3. M

    Breaking the 36MB RAM limit on the LCIII

    the little connector is to pickup the two extra RAS signals from the bottom side of the board, the stick essentially functions as two 32MB simms stacked on top of each other I don't have a CC to hand to check but i'll measure the height of the simm later if anyone wants to measure up a CC /...
  4. M

    Breaking the 36MB RAM limit on the LCIII

    So the hole breakout board thing didn't work as planned, so I ended up going another route and making a custom quad rank simm: This simm has been tested and seem to work fine, and even fit's in the case too!
  5. M

    Recreateing the Apple TechStep

    Wow, the amount of detail in that is amazing!
  6. M

    Recreateing the Apple TechStep

    Me too! it's going to be a really awesome bit of kit once it's finished :) As for pricing, it's hard to say exactly at this point but we are trying to keep to cost down where we can (e.g intergateing the port packs and ROM packs to eliminate unneeded connectors and extra bits of casing)
  7. M

    Recreateing the Apple TechStep

    Time for a little update: The logicboard has been stripped and scanned and I am currently working on tracing the outer layers This is only going to be a aide for generating a schematic though, the board is a 6 layer one so simply tracing it in sprint isn't going to be possible (And even if it...
  8. M

    New CPU Accelerator options for 68K Macs?

    Soooo, you still up for looking at the PAL's? I have dumped U1 and U3 (a GAL16V8 and GAL20V8) but U2 and U7 are indeed PALCE20V8's and are read protected
  9. M

    Cloning the Interware Booster 30

    Received a batch of PCB's today, Initial testing on the TH version is looking good! I need to do some stability testing but the LCII at least boots with it installed :) Also need to change the footprints used for the caps as it seems 2.54mm pitch would have been better for the polymer (or...
  10. M

    Help with getting an IBM DDRS-34560 working

    I actually redesigned the adapters a couple of years back and still sell them :) £13 each or £12 if you buy more than one. International shipping is expensive these days though. There is a thread in the trading section though it's pretty buried now, I really need to set up a online store at...
  11. M

    cheesestraws' conquests (cheesequests?)

    Yes please! I'm quite intrigued on how they are connecting it. I had a CII project in mind but couldn't find a easy way to grab the signals I needed.....
  12. M

    Cloning the Interware Booster 30

    Looks like the CCII is LCIII based, I know these don't work on the LCIII but never did any investigation as to why as they already have a easy 33mhz upgrade
  13. M

    Recreateing the Apple TechStep

    We have now reached the first major milestone! This: Now it might not look like much but this techstep now has none of the original programmed parts installed. The main micro and all 3 PAL's have been replaced verifying that all the dumps are good! Work can now properly start on stage 2 :)
  14. M

    Cloning the Interware Booster 30

    First pass of the layout is done, still needs a bunch of tweaking (Mainly pulling traces away from the through holes) but I think it's looking fairly good so far :)
  15. M

    Cloning the Interware Booster 30

    I'll echo what @cheesestraws said: just give it a go! Of course! I'm far from a expert here :) It was already my intention to move those traces away from the pads, I normally try and space traces between pins as far out from the pins as I can but only didn't this time as it was quicker not to...
  16. M

    Cloning the Interware Booster 30

    Finally got around to starting work on the easy-assembly through hole version of the card: This is going to retain one surface mount component - the clock multiplier, Ideally I would swap this for a DIP part but I'm not aware of any modern clock multiplier IC's in a DIP package Still got lots...
  17. M

    Recreateing the Apple TechStep

    Thanks :) Yeah that board needs some tweaking, those traces where originally run that way just to leave more space for the boost converters while I was laying out the board but now the positions have been set those traces could be shortened Making a software version should be possible but once...
  18. M

    Recreateing the Apple TechStep

    Provisional version of the new DC in board is done: This comprises of a lithium battery charger, battery protection IC and associated dual mosfet and two boost regulators (+5v and +9V) This board can in theory be fitted to a original techstep however the +5V regulator should be omitted in this...
  19. M

    Recreateing the Apple TechStep

    Me and @jajan547 are currently working on creating a replica of the Apple Techstep This will be a functional and (mostly) electrical clone of the original but will not be a exact 1:1 copy as the design will be optimised where changes can be made to make the board easier or cheaper to assemble...
  20. M

    Reverse engineering the LC II Logicboard

    Board layout, gerbers and scans are now on GitHub: https://github.com/max234252/MacLCII_Reloaded As with my other designs these are provided under a non-commercial licence but if you are a repairer and want to offer transplant services (or have any other commercial use in mind) please contact me
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