Search results

This is something I have actually considered doing, it should work as long as the timings for the RAS and address signals line up (Which logically they should) you'l need to invert the RAS signals for A11 as RAS is active low adn address lineas are active high In short, it's defiantly worth a go!

The IIci is already on the reloaded radar, i'll get to it eventually if someone else doesn't beat me to it. Just need to finish off the TechStep clone, Mac 286 clone, some accelerator related shenanigans and maybe the LC475 first :)

Would be very intresting to see one of those SIMMS and try to figure out what it's doing, I haven't ever seen one for sale though

Well the boards work, I was going to assemble and sell a couple but my cheap source of DRAM IC's fell through and the next cheapest source is about £1 a chip so with 32 chips and assembly I would probably have to sell tham at £60-£70 each which I suspect is more than anyone would pay.... Really...

yep indeed as @jajan547 says they will work fine however there are a couple of considerations - We are using backlit modules which are a little thicker than the original one, I also haven't seen a module with the exact layout of mounting holes and most modern modules have a different connector...

And a little update (As I realise I haven't posted a update here on the hardware for a while...) Logicboard has now been fully reverse engineered to a schematic and we have found compatible replacements for the LCD module, currently working on prototyping the switchable ROM "pack" and a couple...

Finally got a working PB G4 DLSD :) it *almost* fast enough to browse the internet! (posting this from it)

Classics need a 27C400 which you need a adapter to be able to program in most modern programmers, if you get stuck let me know as I have the chips and programmer to make them if needed Actually thinking about it I might have a spare CAS PAL too.... If no one else jumps in I'll have a look...

As far as I am aware no one has yet cracked that PAL so it's a salvage it form another board part unfortunately Maybe @Bolle can use his expertise to recreate it?

I just brought a 33mhz IIvi card off someone at 68k (and was also bidding on a 40Mhz IIci card on ebay but I lost that one by $2.50...) Haven't received it yet though so will need some FI into it's cloneabality and suitability for modification once I get it

Not yet, well I started the LCIII and got about 2/3 of the way through the schematic then got lost down the "ooh there's two extra RAS signals" rabbit hole :)

It should work just fine in a 128-512k board as it's literally just the original Rom-inator design basked onto a plus logicboard (and thus could be baked into any other board the original design supported) Not quite yet, I only got the boards in January so you can't expect me to finish them...

Plan....... um yes, I deffinatly have one of those! The good news is a plan is not needed, the SIMM fits just fine with some room to spare :)

The two extra wires pick up the two additional RAS signals form the bottom of the board, it's essentially just a custom quad rank SIMM I hadn't thought of adding a header to the reloaded designs, I'll defiantly be doing that now :)

It works! Just have to hope that simm will still fit in the case :)

I'll send you a message once I get around to weighing the boards so I can get postge prices, I have three of the V1.1's avalible for the cost of the PCB + shipping or the final PCB's will be available in a next couple of months

Shipping to Germany is no problem, I'll get a postage price and shoot you a PM sometime tomorrow

Absolutley! it's still a very active project just I haven't had time to update it recently (too many other projects....) The V1.1 boards have been tested and mostly work fine, they require two small patches but that's it, V1.2 boards with these errors corrected will be drawn soon Though if you...

There are a few pictures in this thread: https://68kmla.org/bb/index.php?threads/reverse-engineering-the-macintosh-plus-pcb.38414/ I'll post some more up to date pictures of the ROM-inated board once I have actually tested it..... Need to go pull the 512K out the loft so I can test it (Oh, and...

I have repro plus boards, includeing one with a Rominator built in (Which I got PCB's for in January and still need to test!) Really need to get around to posting those designs on github.....