Recent content by Arbee

For games you can't. Unprotected ProDOS disks (mostly later productivity software like AppleWorks) can be converted to 3.5" with CiderPress for Windows, but it's a pain.

The x100 AV does not include the DSP, but it does have the Civic video chip, Singer audio chip, and the Phillips audio and video encoders and decoders. I have no info on the original Valkyrie or the 52XX/62XX (or 580/630) machines in general. I reverse-engineered Valkyrie and the ATA interface...

Platinum/Iridium looks like it's pretty much DAFB with a QuickDraw accelerator bolted on. No video scaling, as NJRoadfan noted. See here.

The AV card for the NuBus x100 machines is the Quadra 660/840AV video circuitry plus a PPC to '040 bus translator. Kinda amusing, but it worked.

Quick sanity check: slots 5 and 6 are set to the internal ports, right?

The letter suffix is usually a mask revision on Apple parts. And for ROMs in particular, it often is interchangeable with a version code (it definitely is on the Plus and some Apple II stuff, for instance).

With flybacks there's not really such a thing as "tack it in there long enough to sell". If it's not compatible and you get a picture at all, it's going to be very obviously distorted.

If I'm understanding it correctly (and I may not be), V+ is Vcc and V- is ground (and GND is the case/shield ground). Many of these interfaces (including the official Apple one) used HSKo as the Vcc supply but there were some that used a wall wart instead.

Don't the serial port MIDI interfaces drive the 31250 baud clock through HSKi? If there's a schematic for that you can look at how it drives it.

Heh. 343S1035 is "Single DMA Video", kind of a V8/Sonora style system controller for LaserWriters, including the "video" interface to the print engine. Also 344S1021 is a PIC (65C02 system-on-chip), like the IIfx/Q900/Q950. That's kind of interesting.

Just for laughs I tried putting the SE slot back into the Classic and the Radius Full Page Display worked fine with the Classic ROM, as you'd expect. As an aside, that's the only SE PDS card I have emulated right now, so if anyone has ROM dumps and PCB photos of others, I'd be happy to have them.

I haven't tried that specifically, but I have made Franken-configurations, usually by accident, and they normally just work. I didn't know until fairly late in the process that the Mac TV wasn't supposed to have an LC PDS slot, for instance, so I was running it with an emulated Ethernet card...

In MAME, the Classic is literally 3 lines: macsefd(config); // inherit SE FDHD configuration config.device_remove("pds"); // remove SE PDS slot config.device_remove("sepds"); // remove SE PDS "bus" As far as I'm aware the only real hangups on hardware are the larger ROM size...

Checking the debug symbols for the Classic and PB100 ROMs that came with Xcode they're not Universal. That said, the Classic is effectively an SE FDHD with the slots removed so I wouldn't be surprised if the Classic ROM just worked in the SE (possibly requiring an FDHD), at least with the ROM...

Apple frequently uses multiple access widths to the SCSI controllers so you may eventually encounter non-DWORD access even without that extension. When I was bringing up the Quadras, the Control Panel was writing a block of settings from a non-word-aligned address which kicks off a bunch of...