Recent content by obsolete

You're going to want this too: https://www.bigmessowires.com/mac-se30-with-upgraded-rom/

Nice work! I wonder whether the reason that nobody else has posted about these caps is that the vast majority of 5xx owners are afraid to disassemble their fragile, brittle machine far enough to reach this board 🫤

Nice, glad you got it working. You can edit PC Radeon BIOSes in Windows with RaBiT: https://www.techpowerup.com/download/rabit-bios-editor/. Might be able to cobble something together with the correct timings to run the clocks at full speed that way.

Yikes, that's crusty! I agree that those are likely 4.7uF.

Right to jail. Just don't breathe the dust.

Preheat the board so your hot air station doesn't have to work so hard. This will also reduce how much you warp the board from uneven heating. You can also buy nozzles for specific chip packages that direct the heat evenly toward the pins so you don't have to keep swirling the gun around. They...

Ah, good pictures in that MacRumors thread. Yeah, desolder, replace with screws. That's the way.

I think I see what you're suggesting and it might work, but how are those studs attached to the board? Is the whole thing soldered into the board, or is there a nut soldered into the board that the stud is threaded into? If the latter, you may just be able to replace it, but you would need to...

Thanks! I just checked that card and its ROM chip is an ST 25P05V6, which means I did not pull off the original ROM chip and replace it, but rather overwrote the PC ROM with the full Mac ROM. So the PC ROM is gone; sorry about that. I have not been very careful about archiving vintage PC stuff...

Yes, that's an older (NV25-based, 2x/4x AGP) Ti4200. It can be made to work in a Mac with a custom ROM. The ROM Maker app is on MacRumors and I think MacOS9Lives, too. It takes the PC ROM as input and generates a Mac ROM. Let me know if you have trouble finding it.

You've got ten 68k machines and one PowerPC. Is there anything PowerPC-specific that you like to do with the 8500 that you can't do with the rest of them? If so, it should probably stay, if not, it should probably go. I have opinions on the others but let's start with that :)

You guys seem to be having a lot of fun :) I was hoping I could join in, but I'm not sure: I've been using this card in an old PC just for booting into DOS to test and flash PC video cards. I grabbed it from a scrap bin many years ago and kept it around because it worked, and I thought it...

Lots of Radeon 9000 news today--I got a package from Japan and this was inside: I'm not sure whether this is an OEM or retail card but it has an Apple part number sticker with 630-4254, so I guess that means OEM? Would've come in an MDD then, I think. Anyway, it has the 3.3ns Hynix RAM chips...

Bummer. Since you have it in a PC, you might be able to boot into DOS and use R6XMEMID to narrow down which DRAM channel(s)/bit(s) are having errors. I'm not sure what the mapping of channels to physical chips is on these cards, but there's a Radeon 9200 schematic posted at VOGONS and the 9000...

Nice work! The switch thing is also mentioned at The Mac Elite. My PC Radeon 9000 Pro card might be a bit of an oddball. Here's its switch footprint under magnification: As you can see, the top pads do not connect to anything! Even if one of those dual switches was populated, the top switch...