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Thanks. =D Smol detail to correct with the PCBs, the board is slightly too wide and the DA-15 doesn't sit quite flush with its edge - so it's going to get even smaller in the next and hopefully final revision, after which I'll offer a handful of kits for sale. I'm also spinning a passive DA-15...

PCBs are here at last! And parts... mostly. Digikey made a boob and sent me LM358s instead of PIC10F320s. But here, substituting a PIC10F322, it is! That's a 22 µF aluminum polymer cap (used at the suggestion of @cheesestraws in lieu of a tantalum), an 0.1 µF ceramic cap, and a 330 Ω...

Before we change the subject - who wants the new adapter PCB and hasn't soldered their connectors yet? I'm wondering if I should throw some more connectors into my next Digikey order...

It certainly would be the most straightforward solution from a user's perspective, and it could be incorporated easily into "Mac in an FPGA" type projects. I just don't know if I can actually do it. =) I haven't given up yet, though. True, though the Atmel fitters are also very old and very...

Well, if I can get the RPi working with PREEMPT_RT as the frontend, you should be able to mount any filesystem that Linux can read. I made up an RPi hat for that purpose and have sent it to JLCPCB to be fabbed, so now it's just ("just") a matter of the software side of things... that'd be my...

To everyone I sent adapters to, I included some of the new PCBs in my latest JLCPCB order, so if you can stand to wait a couple weeks for them to arrive, I'll be happy to send you replacement PCBs when they come in. Should be pretty cheap, I can probably just send them in a standard envelope...

While I know they're ultimately just block devices that can have any filesystem on them... I'm fairly sure that the SD spec mandates that they use MBR and FAT for the sake of embedded devices. Is Mac OS not respecting that these days?

Whoo, long time since I've updated this thread. The USB frontend with the PIC16F1454 did not pan out, unfortunately. I think it behooves me to return to the idea of a more Floppy Emu style frontend, probably targeting the PIC16F1788 and its whopping 2 kB of SRAM. I have the hare-brained idea...

Oh boy, it's been a while since I updated this thread. I haven't forgotten, I promise! It's just that my mental stove has an awful lot of back burners... At this point I'm all in on producing a design that will work with @max1zzz 's ITXPlus board - though, of course, once that's working, it...

Okay, I've made a new spin of the board that swaps the positions of the two connectors, should have done that to begin with. It's available in my misc-mac-pcbs repo on Github.

D'oh, I'm a bonehead, I thought I checked that... Victory! I'm so glad to have it experimentally confirmed, I've updated the compatibility page in TashNotes. Thanks again for doing this!

@David Cook - glad to see that there's an Apple source that confirms that pins 6-9 are +5V, that was my biggest worry in spinning the PCB because it's the biggest difference between the HDI-20 pinout and the standard drive connector pinout... It's understandable that they say the LC doesn't...

That first link is incorrect, the LC and IIsi are known to have HD20 support in ROM. BMOW's compatibility list is better, but it leaves out a few more models (the LC II, IIvi, and IIvx) that have been tested and proven to have support in ROM - my list is the most complete and correct, to my...

My 99.9-percent-sureness comes from the fact that the .Sony driver in the PB100's ROM is the same size as the one in the Portable's ROM (and some others, I think, it's been a long time). But we won't know 'til we know.

Finally got around to making available the board files and Gerbers for the kits that I've sold (and continue to sell) in my Ko-fi shop, in case you want to manufacture your own instead of buying kits from me. Also put my HDI-20 adapter board there, and will probably put future small project...

Mostly for future reference, I've uploaded the board file and Gerbers for this board to a new repo on my Github here (among some others): https://github.com/lampmerchant/misc-mac-pcbs

Volunteer get! Thanks @David Cook ! Unfortunately the limiting factor here is the ROM rather than the interface - to my knowledge, no other Powerbooks have HD20 support in ROM - though the cable would still be good for connecting a Floppy Emu as a floppy drive. If anyone else is interested...

It's time for another Tashtari shenanigan. (You don't see that word used in the singular very often, do you...) So here's the situation: I'm about 99.9% sure that the Powerbook 100 has HD20/DCD support in ROM, but I want to be 100% sure. As with all machines with HD20/DCD support, the device...

These are things that I'm not going to be able to explain very well (I'm not an electronics engineer either), but I'll try - anyone who knows better, please correct me. Yes, technically a 10.1 µF capacitor would have the equivalent capacitance of both capacitors, but it's slightly more...

The 2.8 volts figure is what I measure between ground and Vcc, is that what you're asking? I'm not sure I understand the question.