Recent content by joevt

So pci137a,5 is probably connected to the pci-bridge. The bridge is a "XIO2000(A)/XIO2200A PCI Express-to-PCI Bridge" which means pci137a,5 is a PCI controller instead of a PCIe controller. The Accelsior probably doesn't have an Open Firmware fcode image in the PCI Option ROM? Apple never made...

Are you sure the SATA controller is not the one in SLOT-2? ASMedia (1b21) ASM1060 is a SATA controller PCIe 2.0 x1. The bridge chip says the connection is only 1 lane so putting it in a x8 slot is not going to improve things (unless that slot is closer to the CPU?). You'll always be limited to...

Your benchmarks for the Orico are better than SATA I (150 MB/s) but not SATA II (300 MB/s). Are you sure it's connected as SATA III? What does the PCI and SATA tabs in System Information.app show? Power Mac G5 with PCIe has PCIe 1.0: 2.5 GT/s per lane * 4 lanes * 8b/10T = 8 Gb/s. 8 Gb/s * 1B/8b...

B&W G3 Yosemite REV C schematics at: https://www.macdat.net/repair/apple_schematics.html The pages are not in order and it's not OCR'd and Apple's OCR has a tough time with 80% of the text. There's a revision history with many items but they are not detailed. For U48, it says "PROG, CMD HACK...

I think you mean 21.1 cm x 13.1 cm = 8.307 in x 5.157 in = 9.778 in diag = 77.2 dpi cm instead of mm.

You would need to drill through the transparent piece and the plastic of the subframe? The alternative to drilling or cutting is melting. Heat a metal pin (with soldering iron?) sufficiently that it can be inserted into the plastic. Is that possible? Will the hole that is created snuggly hold...

I think it would look cleaner without the transparent plastic piece. The JB Weld might perform better if it's thicker but I have no data or experience (more JB Weld probably means more elongation?). It's a tossup. If JB Weld doesn't stick to the plastic well then it would be nearly useless...

The error may be up to less than an 1/8 of an inch which is not bad since you are measuring in eighths of an inch. bc <<< 'scale=10; (sqrt((5+2/8)^2 + (8+4/8)^2) - (9+7/8))*8' .9249648104 Remind me, do 68K portables have square corners or round corners? Round corners make it difficult to...

The vertical and horizontal resolution also needs to be known to calculate the DPI, but this info can be gathered from the Mac's specs. Alternatively, you can also just use the horizontal number of pixels and width or just use the vertical number of pixels and height. Using the diagonal is...

Tape some paper to the side of the metal drive bracket, install the metal drive bracket, and stuff JB Weld between the fins and the metal drive bracket. The paper should stop the JB Weld from sticking to the metal drive bracket? Instead of paper, use a thin metal plate? Something less thick than...

Thanks for that. I've attached the result of parsing that dump with my parseOFlspci command (included in the "lspci for Open Firmware.zip") which uses lspci. I welcome dumps from any Power Mac or ANS that has different results. Does AIX have pciutils with lspci? I suppose someone could port...

MPW's DumpPEF is a command line utility and therefore scriptable which is useful if you are researching multiple PEFs. It produces text output that can by processed by scripts or compared.

My MacROMan fork has all the New World ROMs (except maybe the ones created to boot System 7 or 8 on New World Macs). I have a script decompressrom.sh that has a command dumponerom that uses the tbxi dump command to take apart the ROMs. https://github.com/elliotnunn/tbxi It then uses MPW's...

Anyone with a serial connection to Open Firmware able to get PCI info using #50 ? https://www.dropbox.com/scl/fi/ddwv1zeddpydkzrykl4kl/lspciForOpenFirmware.zip?rlkey=rujv8sbhb8v4ehk9b845bd3k1&st=qwg4xfv2&dl=0 Another method to paste scripts into Open Firmware quickly (avoids...

There appears to be some voids on the underside of the subframe assembly (shown in this image on the left side) that could be filled in with putty to add reinforcement?