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@Bolle ISTR you having one of these boards? Do you know what programmable logic ICs are used in the Rev.A and if they are crackable?

Why trip at the center of the pixel? Might keying to the leading and or trailing edges of the signal be easier for converting analog to digital input in this single bit, Black/White system? Synchronicity would be necessary for sampling a GS signal I think, but why couldn't this particular...

Wondering about the thickness of that KBD assembly? I suggested the cheapos I'm using because that would not be an issue. While mechanical and so being much too thick for your build, the IIgs KBD is Snow White purity incarnate. If you can noodle out a rubber dome membrane interface with printed...

It's not the flex circuit so much as the hardware to make use of it that will be your limiting factor. The rubber domes and key placement are set in stone given my KBDs. Unless you're excising swaths of Cursor/PageNav/NumPad sections of a full size KBD, there would be no need for customizing the...

Unless you're doing your own flex, you're stuck with using parts available to be scavenged from KBDs like what I'm lightly modding. Haven't looked at it , but excising the upper part of the case seems likely to work. That would interfere with the KBD/Panel Bezel interface. Were I you, I'd play...

All that's pretty much what we're trying to figure out. Per the diagram above, A11, RAS1 and RAS3 are all that's keeping Bank A of the IIsi from supporting a full 64MB to match Bank B's 64MB and yielding the IIci/SE/30 max. loadout of 128MB. AFAIK, that's the limit for the 68030 II series...

Nope, I'm comparing the depressed keys on one of the two I'm rearranging with the raised keys on an intact KBD. Four rows of black keys swapped over into the silver along with the controller board KBD so it matches up with the black mouse dongle. It'll go with this one if and when . . . ...

the maniac = Danamania = @nanoraptor = Dana Sibera = Pixel Princess of Oz = Official Muse of the 68KMLA KBD detail: Forgot I was linking to her Lounge Thread, that's why you can't see it.

Yep, dana-b-d-bombe when it comes to Photoshop . . . is it real . . . or is it . . . https://68kmla.org/bb/index.php?threads/vhacks-everywhere.35450/post-382942

Just found the maniac's vHacks thread at the MLA again. WGS95 sans gratuitous iVesian MacPro handles.

Details will be forthcoming. First step after battery removal will be buzzing connections. ICs will definitely be desoldered and socketed for reading the contents of the logic ICs and their transfer to the BlackMagicalBus™ riser card along with the bus transceivers I think. Though those might be...

Not unless @-SE40- asks, that's tangential I think for now. It's in the procedd and being documented for a project I've collecting materials for and whittling away at since @nanoraptor first did the vHack.

Whatever -

Schematic Comparison -

Transceivers -

VIA2 -

BIU -

Block Diagrams - Long term goal is learning enough about this stuff to implement the Rev.A discrete IC setup hooked up to the processor bus of the Macintosh_IIcx repro board that @max1zzz has up his sleeve. Burning its NuChip implementation to its bare foundations will be icing on...

Pretty Case, somebody really knows his stuff spotting that board in this pic and of my longstanding fascination with NuBus. One wonders why this board doesn't start up . . . . . . m thanks to a higher power that Rev.A predates Maxell and the battery cages incapable of...

This project has been several years in the works, but I've never had the Initial Release Macintosh II in hand. Thanks to a heads up from jeremywork over at the MLA, one is tracked to be arriving within the next 55 hours, but who's counting? This initial release of the DCaD series would be the...