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Thank you so much! I've spent a lot of time fussing over whether it's 'finished enough' to release, so hearing that definitely puts me at ease. I've been using a 25ns ATF1502ASL-25AU44 and a 70ns SST39SF010A-70-4C-WHE without issue - pretty sure those are the slowest currently-available grades...

Another thing to check out is the disk-loading mechanism - if it's dirty or even just gummed up with old grease, it can get into a state where it will appear to accept a disk just fine, but the disk is not locating fully 'home', meaning that the heads and sense switches are not making proper...

The "patched HD Setup" has been floating around for years, I'm not sure where it came from or the nature of the changes, but the effect is that it skips the check for Apple firmware on the drive, so it can partition non-Apple drives. The first two downloads at...

I have an E-Machines Futura SX that'll do 1024x768 at 8 bit (plus 24 bit at lower resolutions, and 1152x870 at 8 bit as well). It's not perfect (actually getting 1024x768 out of it requires an annoying sense-code workaround and I can't get it to work properly in accelerated mode), but they're...

Case in point (different model, but of the same vintage) - my PowerBook 180c. It had sat unused in a drawer in a relative's office since around 1996, if the modification dates on files were to be believed - certainly not the temperature extremes or damp that old computers often find themselves...

Yeah, this is fascinating. Somewhat beside the point, but many many years ago, I had an old 486 PC that would do something similar when booting from a floppy disk. It would boot successfully, but corrupt the disk in the process, even if the write-protect tab was set. If it'd help, I can take a...

Just did an experiment with my 180c, and it does *not* seem to recognise a monitor attached with the NTSC Monitor sense code (100), nor PAL Encoder (extended sense 00-00-00) or PAL Monitor (extended sense 11-00-00). So that seems to put paid to that idea, sorry :(

The 15.6672 MHz dot clock for 512x384 would also be plausible for an underscanned 640x480i mode, so while it not being listed certainly doesn't bode well, it still wouldn't be beyond the bounds of possibility that it could exist as an unsupported mode. Stranger things have happened. If I can...

That’s a good question. Its video output supports a number of different resolutions so having support for an interlaced display wouldn’t be beyond the bounds of possibility. I’d very much doubt if it could do colour composite output, but interlaced 60Hz RGB sounds pretty likely. You’ve piqued...

Unfortunate as it is, I think simply "remove the hard drive and sell it without" is probably the most straightforward option for you. There isn't really a good way to read or erase the SCSI hard drives in old Macs unless you either have an old Mac, or another machine with a SCSI interface and...

I don't believe any Macs were able to output colour composite video from the 15-pin connector, except maybe some specialised video cards (the AV Macs are a different story). The video output is still RGB in those modes, just with resolution and timings suitable for NTSC or PAL. You CAN however...

I have the same card in my SE/30, here's the pinout, copied from some notes I've been accumulating on the card. Looking at the component side of the card with the PDS connector facing to the left, the pins are numbered as follows: --------------- | 2 4 6 8 10 | | 1 3 5 7 9 | ------...

The complete failure to power on with the card installed points to a shorted power rail. The SE/30 MacCons that I’ve seen have a pair of tantalum capacitors in one corner - these sometimes fail short-circuited, either with spectacular fireworks (which at least makes the problem obvious), or just...

Yes, that's right. If you switch your Mac off and back on quickly enough that the tube doesn't cool down, it'll show a Simasimac-like corrupted version of what it was last displaying for a moment before the CPU comes out of reset and initializes the video RAM. Glad it's working now! It's an...

Yeah, that option selects MacIP and will either say “EtherTalk” or “LocalTalk” depending on what your AppleTalk connection is set to. “Ethernet” does normal IP. Definitely a confusing UI choice on Apple’s part. MacIP is neat (I run it to give IP connectivity to my LocalTalk-only Macs) but since...

Actually, that brings up one thing that could be causing an AppleTalk error - the "EtherTalk" option under MacTCP is for an IP-over-AppleTalk protocol that you almost certainly don't want to use unless you've got a working AppleTalk network. Make sure you're selecting "Ethernet" in the MacTCP...

It’s not a DIY electronics project without a few bodge wires

Oops, wasn't paying attention while tracing that schematic. Got the LED wiring and the order of the serial port pins wrong. Here's a second attempt that I'm pretty sure is right.