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I have a mini FM transmitter for my car that pre-dates CarPlay. I can plug my modern-ish phone into it and broadcast to all FM receivers within a 6' radius! I also successfully plugged a Bluetooth audio adapter into it, so now any device can send it Bluetooth audio and have that come out as...

A lot of them have been digitized online now. Oddly, Archive.org seems to have mostly the Spanish ones and not the UK ones (only a handful of those), despite having the full collection of the floppies/CDs.

Hah; you brought back memories of pranks we used to play in the Mac Plus labs, where we'd turn the brightness down on all but one Plus, and then watch people try to figure out what was wrong.

Heh... RealBASIC leaves an odd taste in my mouth because I was one of the beta testers, so I used it for free for a number of years. When he shut down the beta group, I looked at the retail price of the software and immediately moved on to other things, abandoning my RB projects.

One thing I came to appreciate about the 800Kb "floppy shuffle" was how for the most part it "just worked". You could actually use the computer while shuffling the disks, and everything rarely stalled while the OS waited for you to insert some random disk just to make sure it existed. This was...

Mini vMac mostly works; you can enter microbug (or MACSBUG or Jasik's if you've got those installed) but there can be a few surprises, as Mini vMac does still patch various I/O routines. I actually haven't tried dropping to the debugger since Paul implemented Basilisk II's graphics hack, so...

Congratulations!!!

It was crazy at the time, because things were changing so fast that the new computer tech was almost wholly incompatible with the old computer tech within 5 years. I've bought all-in-ones and laptops the entire time solely because I watched how others purchased and assembled components with the...

Here's something I put together just over 25 years ago -- it might help? https://web.archive.org/web/20000902230253/http://free.prohosting.com/~emanon/code_abs.html

Yeah; I'd personally avoid trying to force NMI in BII; better to use QEMU or MAME where the ROM isn't already patched so heavily. On the other hand, BII has its own debugger already (as do QEMU and MAME), so if you don't mind learning yet another debug environment, you could just use that...

A/UX kernel expects certain fixed memory allocations, doesn't it? Are we talking 3.1.1 here, or an earlier version (2.x)? It's possible we may have to get our fingers dirty with some kernel hacking to get this functional... but the result may mean a more usable A/UX less likely to...

That's useful to know; I can't recall ever using more than 512MB RAM with Rhapsody 5.6 -- usually 128MB.

Have you tried with an OS 9 install specifically for the 450 DP? The Mac OS ROM files are not all built equally. So you could be loading the ROM file and then it still can't address the hardware and load the System file, so it loops back. It came with Mac OS 9.0.4 installed though. Have you...

Yeah; I always thought that the problem with the K6-2 wasn't the processor, but the fact that it was low-enough cost that it was usually shoved onto mainboards that had weak bus speeds and thermal control issues. As for Win98 -- it was always a stopgap measure that tightened up things a bit on...

IRQ refers to the hardware interrupt handlers -- any processor will have a certain number of "slots" that can be used, with an associated value that can reference them on the software side. This is essentially the key way for a piece of hardware to pause CPU execution to do something, and then...

Thanks; I was going to say "couldn't you leverage debug pins?" but with the schematic, I can't see anything providing the ability to set an interrupt exactly there. That seems... odd. did they have them in the pre-production board and remove them for manufacturing?

Personally, I'm enjoying the daily updates :) Keep them coming! I don't know if CCR<7:5> is used at all, but I don't see any reason why they would do so? As you say, early Macs were running in Supervisor mode, and the OS and Frankensteinian ROM then had to account for that in later revisions...

IIRC (fuzzy memory, it was a long time ago), I think this is what Paul eventually ended up doing for Mac II audio in Mini vMac. It works well enough for everything I've thrown at it! He spent years trying to figure out how to get the Mac II audio to sync properly, and eventually just settled...

Don't take me as the authority here, but in previous oscillator discussions, people have stated that Apple tends to overspec and there's a lot of wiggle room. Probably any of the above would work. Might be worth doing a search for 20, 22 and 33pf in the forums to see exactly what the...

Interestingly, there's currently a discussion over at the Garden specifically around ensuring we preserve the entire collection. I know somewhere (I think on archive.org) there's a massive dump of 13,000-ish, but that includes broken ones, duplicates, and people's various tweaks that never made...