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Seems like the sensible option would be to run LocalTalk over one pair and EtherTalk (and regular Ethernet) over the other two pairs, but I suppose this predates the ready availability of sensible options. I look forward to hearing how this functions when bridged to LocalTalk through a StarTalk hub.

I don't think it would be useful to me but I would still want one. 5/8 time?

I recall reading a retrospective article about networking problems with a passive star. The short summary is: it was supported up to 4 devices, and the author had problems around 30. A big part, possibly, was all of the terminators adding resistance. I don’t know if omitting some of the...

OPTi “FireLink” chip working as intended.

No, about 10 years old I think. From a Japanese company called Columbus Circle that makes a lot of Famiclone/peripheral type electronics.

Why would the blue color put me off?

That’s a slightly different error. (1 << 16) isn’t zero there, since int is wide enough to represent the value. The issue is in converting that value down to the actual type. Overflow during the calculation gives you different errors: % echo 'int main() { long long x = 1 << 32; }' | clang -x c...

Ah, sorry, I missed that requirement. Looks documented to work with MacTCP but not System 6.

For 1, GetDown Classic is exactly that.

Hmm, indeed you're right. “Inside Macintosh: Sound” shows some examples of non-sampled format 1 ‘ snd’ resources starting on 2-76 and a list of command on 2-93. There's a discussion of paying sounds asynchronously starting on 2-46. So it does seem like it could, in theory, be used for background...

I wrote a decoder for ‘ snd’ resources at one point and I don't remember having to handle anything but sampled sound. I remember seeing music in midi resources or ‘MADH’ (a module format from PlayerPro), but I don't know if the libraries you'd need to use them are available on 68000.

From here, I think: https://68kmla.org/bb/index.php?threads/reverse-engineering-the-macintosh-plus-pcb.38414/post-474068 https://bitsavers.org/pdf/apple/mac/schematic/

https://gamemechanics.itch.io/crystal-quest-classic

Definitely is. Those connectors on the left and right of the daughterboard are ADB connectors.

Ah, yes, I do have a picture of that around from when I swapped in a better unit from a 5300. As you can see, the swappable unit has two ribbon cables running to an external microcontroller. I’d guess one is rows and one is columns. The thicker ones might be power and ground for the caps-lock LED.

ADB is involved, but more to the point of the original question, isn't the connector on the back of that keyboard a ~20-pin ribbon cable? That might be rows and columns that any microcontroller could scan.

Aren't configurations 2-4 addressed by existing, common adapters? I think 800×600 made its first appearance on the Mac as a sub-type of the VGA mode. I've used it on my Q700, though I couldn't swear it was the internal video. But anything capable of SVGA is capable of VGA and doesn't need a...

4, if you count the Japanese ROM from TN138.

8.1 by default, though there’s been some success with backporting as far as 7.5.5. https://68kmla.org/bb/index.php?threads/backporting-hfs-to-mac-os-8-0-and-earlier.35742/ https://github.com/elliotnunn/HFSPlusBackport#status-of-hfs-backporting

Slightly different meanings, in the way I'd use them. IDC implies shrouded and keyed. IDE uses 40-pin IDC headers; an RPi merely has a 40-pin pin header.