Search results

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.

Success! With a little help (okay, a lot of help) from @zigzagjoe, TashSync is now working on the IIsi without an external power supply! He noticed that the PIC's own protection diodes could be used in lieu of external diodes to rectify the composite sync signal to provide power as long as...

Lot of shifting goalposts in this project. Partially the fault of my own particularities, but as usual I'm also learning more minute details of my favorite PICs as I go. With the three PIC10F320 firmwares (firmwares? firmware programs? units of firmware?) complete, I'm now trying to...

The Toby firmware is working! ...From a simulated signal, at least. Don't have a real Toby card to test with (or a Mac II, for that matter). It should also work for that SE/30 card whose name escapes me that has a flat horizontal sync pulse but no serrated pulses, but I haven't set up a test...

So far so good! I have PIC10F320 firmware now that I've confirmed to work on the IIsi on at least one monitor which I know doesn't support sync-on-green. Same should work on the IIci, though I don't have one of these to test on. PCBs on the way, and we'll see whether I'm physically capable of...

Yeah, most likely. I was mainly intending to use it over the flat interval in the Toby card's composite signal where the signal has to be synthesized, rather than full time. This is what I'm depending on. =D So far it seems to hold true, fingers crossed that that continues to do so, because...