Recent content by gsteemso

Super impressive! I'm awed. This would be a great idea! Even if it were less capable than this proposal, there are only so many 550 boards out there and having something more attainable would be a big help.

I alluded to this issue already in a thread about using large displays with this class of machine, but the problem has expanded enough to justify its own thread. The symptoms: If the machine is booted with a maximum-sized display attached to the GeForce 6600 (the regular one, not the low-end...

I have also learned that System Profiler looks at different data in the SPD ROM than the parts the motherboard bases its autoconfiguration on. You can get a different, potentially more accurate viewpoint by running the Apple Hardware Test utility. There's a user-contributed "combined version"...

Some features approaching those (64-bit registers, and more of them) actually have been added, by a small group of engineers who have developed the Apollo core “68080” using an FPGA. You can’t buy one as a standalone component, sadly – they developed it for internal use in a line of Amiga...

You said it fits physically, but is it both recognized and functional from a software perspective?

Not to mention that, IIRC, OS 9.2 maxes out at 1.5 GiB (max. 1 GiB per app). Unless you are doing very serious and heavy work, you would never get near those limits in practice. More than 1 GiB is more or less wasted money on an OS 9 machine.

You accidentally put this in the subforum for desktop G3/G4/G5. Might get more traction if there's a way to move it to the one for PowerBooks.

Ah, OK. I am probably mistaken, then. I have no idea what the hiccup in the procedure might be though.

You may find the internal drive is interfering with your manipulation of the SCSI bus. I do not remember specifics but I seem to recall that SCSI devices do not just ignore the bus until addressed...? Not sure how accurate that is. Still, even if it is safely tri-stated or whatever during...

It’s an Atlona DP-400 dual-link-DVI to mini DisplayPort converter, hanging off of a Dual Core PMG5. I learned about an hour after making that last post that the reason I’ve not been having success with the mDP-to-HDMI conversions is probably that the adapters I’ve been using are not active...

I have acquired a (nominally) much better monitor, and also had a few tries with SwitchResX. Alas, my efforts ended in failure, but I now know that (a) the monitor is not more than a small part of the problem, and (b) no matter what I do in SwitchResX, the picture never makes it through a...

I haven’t bothered to try it with an interposed ADC-DVI adapter (which is indeed just a rewired plug connection and shouldn’t matter), but I can tell you that DVI can indeed do 2560x1440 because mine is right now. It has to be dual-link though – maybe that is the source of your reported...

Yeah, I thought that IDC header was socketed onto pins too. Alas, it appears to be soldered down, though I suppose it could always just have a “resists tools” level of stiffness. Prying it off would break it either way. I had in mind the technically simpler solution of plugging a miniDIN plug...

@jeremywork, those closeups do indeed help! I can only really say much about the squarer one, but it’s the one I have a machine for so that’s fine. :¬) Sadly, I don’t know any way to actually tell what the two tiny ICs do from the markings, but the 14 capacitors can’t have _enormous_ values...

@joevt I think it was cut/stamped in one or at most two operations, no third round of cutting. Anything else would have cost more and it really isn’t that complex of a shape in person. @jeremywork do you still own those? I'd be quite interested in reverse-engineering them, at least to the...