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Thanks Callan! Interesting that the 950 and the 700 are slightly different, but that may well be the quad doubler. If it's not a big hassle to try without it I'd love to see that, but if not that's OK too.

Awesome, thank you! That verifies that PrimeTime II behaves the same as PrimeTime and IOSB. A few more machines that I don't expect to show anything unexpected but I'm going to ask anyway: a IIvx / IIvi, and a Mac TV.

To expand what Doug said, a PowerBook 140, 145, 145b, 160, 165, 165c, 170, 180, or 180c would all fit the bill here. We'd also be interested in results on a PowerBook 5xx (without the PPC upgrade) and a Quadra/LC 630.

Original Valkyrie does not have any acceleration, correct.

Interesting. Were these battery SRAM cards or what was the technology?

@Oliver_A Right, MAME is currently it for '030/'040 machines as far as emulating the actual hardware. That said, your best bet for identifying a machine is to start with the 32-bit ROM ID at $40800000. https://wiki.mamedev.org/index.php?title=Driver:Mac_68K:Tech_Info:ROMs lists all of the...

Wow. The EPROM contains what looks like a pretty standard 68k Mac driver. With MacsBug subroutine names, conveniently ("floppyopen", "floppycontrol", "floppystatus", etc). Disassembling it should be kind of wild - based on other unhinged FDCs we've seen I'm gonna say they use the 765 for 1.44...

Well, something has to be programming the registers on the SCC and the uPD765 clone. What port does it attach to? The IWM?

I assume there's some kind of microcontroller on the floppy besides the SCC and WD17xx/27xx?

.cdr files can be hard to use, particularly if you aren't on an OS X machine. A regular .iso is generally more widely compatible.

A/UX has its own drivers for all of the hardware and does not use any of the ROM drivers. There is zero chance of making it run on New World.

TMS34010 is a CPU designed for graphics. It was the basis of the "TIGA" graphics standard for PCs before VGA took over, and Midway/Williams used it in arcade games like Smash TV, NARC, and Mortal Kombat. TMS34061 is a video RAMDAC that was overshadowed by the common Brooktree parts.

Basilisk IIRC can use SoftFloat when native FPU isn't available. It's likely the WebAssembly version needs to do that.

Correct, the DeclData's a separate EPROM. A SlotsMem dump should show how the data is properly laid out as you said.

The PRAM value must be set and the SCSI pins must be bridged (actually I think just straight connected to Vcc/GND in the right pattern). Not ideal for diagnosing a machine that can't boot, and it's not clear how that would've worked at the factory either.

Here. It's 2 16-bit wide chips, so it's likely the data is interleaved to make the 32 bits for NuBus.

Correct, the ROMs are 1MiB in size (2x 512KiB).

I have a real full ROM dump of the KanjiTalk NuBus ROM card. I haven't yet committed it to MAME because I have no idea how the ROMs are organized or what software would recognize and use the card. (KanjiTalk versions of System 6 and 7 don't behave any differently when the card is or isn't...

It wants bit 17 of the D0 return value from GetHardwareInfo clear. D0 is documented to be the low 32 bits of the "hardware present" bits from the universal table, and bit 17 in the SuperMario source is "SCC IOP present". The intermediate routine at $40847D0E that it calls if the BEQ isn't...

CheckLoopBack in USTStartUp.a is where it does the check for going into diagnostic mode. ; Check for factory loopback on VIA Sound Volume lines. On Mac,MacPP,NuMac the ; jumper shorts SV2 to SV1. On newer Macs, the jumper simply grounds ; the SV1 line (bit 0, VBufA), except on Normandy...