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I keep a mid-2012 15" MacBook Pro (non-retina) around, it's made up with bits from a few different machines. The hi-res antiglare screen is notably taken from my old early 2011 machine that I had from new. My aunt still has the bottom half of that machine, hope to get it back one day! I'm...

I upgraded a 117/133 board to a 166 board by flashing and soldering in a couple of 29F1610 chips. Pin 1 on both chips needs to be bridged to the adjacent pad with a blob of solder. It's a super easy mod. Incidentally those unused pads next to pin 1 and 44 provide +5V and +8V respectively, I...

I just wanted to show how I've upgraded the ROMs on a regular PowerBook 520 CPU card with a couple of 29F1610 chips, programmed with the 550c ROM. Now, why would you want to do this? Well, you might have acquired a 550c that's been upgraded with a PPC chip, but wish to revert it to its stock...

How do the lines change as you lower the resolution and bit depth?

Yes seems possible one of the VRAM chips is bad, or maybe there’s a broken trace in that area.

You wouldn’t have known it looked like a basket case from the photo, nice work.

I thought it needed to - at least between different partitions on the same drive? Many 68k Macs can only distinguish between SCSI ID for boot selection. It sees multiple partitions on the same ID as one volume and just it’ll boot off whichever System Folder it finds first.

It’s the ‘Switch Power’ one, but I’ve tried a Raytheon. The problematic one was made by Royal Technology or something like that. They’re very rare though, I’ve never seen one.

I moved the hard drive to the Beige G3 and all the same problems are still happening. So the cards work in a B/W G3, but not a Beige G3, with the exact same software configuration.

Excellent work. Removing those old SIMM sockets is one of the worst tasks I can think of - even once you think you’ve desoldered everything they just don’t want to come out. Some of the plastic sockets I’ve come across in SE/30s and the like are still very robust, so I wouldn’t automatically...

No, I didn’t. (Yet) HFS+. But I am seeing corruption on reads and writes on DOS formatted floppy disks, so I don’t think it would be that. I haven’t come across it, but would be interested to read it. Anyway - I got one of these cards working correctly on a B/W G3 (loose logic board) running...

Sure I won't touch it

Yeah I'll happily contribute to this. I think broken out into separate pages would be better. Each machine might eventually have a cap list for a PSU and maybe an analog board, in addition to photos and diagrams. I like polymers, but they're a bit more expensive... and also for a lot of the...

I'll have to move out of my bedroom and sleep in the under stairs cupboard. Wow, and the PC cards were probably more powerful than the host Mac :D

Oh God! I mean yes I’d love one but also no! I don’t have room! And it’ll end up being a whole new ecosystem to maintain Please don’t 😂

Wouldn’t hurt to try, I suppose!

I’ve tried everything obvious. Gone back to a bare bones stock system with original CPU and clocks and clean install of Mac OS 8.1 + v1.6.4 drivers. Also tried a different Beige G3 motherboard and an ATX PSU. Tried all three different ROM versions. Previous to this I’d tried Mac OS 9.2.2/9.0.4...

The gestalt id isn’t a necessary step, i just have severe data corruption issues running this card in a Beige

That’s interesting to know. There were two models of PowerBook G4 that used the 7455 - the 1GHz 17” Aluminium model and the 867/1Ghz TiBook. I wonder how they fared with that monster of a chip.

No - why?