Recent content by joevt

Found this which says Mac OS 9 can be booted from USB for some Macs: https://www.macintoshrepository.org/23373-mac-os-9-2-2-boot-kit-for-booting-your-g3-g4-from-an-usb-stick

What version of Open Firmware does it have? Open Firmware 3.2.4f1 and later should be bootable by USB. See the list of Open Firmware versions at https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/

Hopper doesn't decompile PowerPC. Just disassemble. You'll need something else for decompiling. IDA, Ghidra, Binary Ninja, I don't know.

I would try putting the installer into a partition of the hard drive if you can't boot CD or DVD or FireWire.

Why don't you have 10.4 or 10.5 installed? Use a screen sharing app so you can see what the OS is seeing when the display goes blank? I think 10.5 has built-in screen sharing. For 10.4, you can install a VNC Server. Install SwitchRes for Mac OS 9 or SwitchResX for Mac OS X to give you more...

I would like a 64-bit PCI-X to PCIe bridge so I could try getting more than 133 MB/s from a PCIe device in a Yosemite/Yikes (266 MB/s). The Mac with the fastest PCI-X slot is the Power Mac G5 (PCI-X) (1067 MB/s)...

I'm not sure how this would work. The VGA connector of the KVM might have a diode to select VGA mode from a Mac? But such diodes shouldn't exist on the Mac display connector of the KVM because they would interfere with those in the display and different displays have different diode arrangements...

I believe the intricacies are usually at the computer end and the display end. The KVM cable is just an extension cable. The KVM is probably not an adapter. You should be able to test continuity of all the pins between the computer side and the display side of the KVM switch with no computer...

I don't understand the problem. You have 15 pins on one side and 15 pins on the other. Connect one pin on one side to the corresponding pin on the other. Basically, the signals on the female connector of the KVM that connects to the Apple display need to match the signals on the female...

The instructions include these steps: cd /tmp git clone --depth 1 https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git cp -v linux-firmware/keyspan/usa28x.fw /lib/firmware/keyspan/ It's copying the file keyspan/usa28x.fw in the git archive from...

How does the TechStep serial stuff relate/differ to the Serial Test Manager stuff in Power Macs? The Serial Test Manager can't do headphone jack and ADB and SCSI tests like the TechStep can. In Power Macs, the Serial Test Manager has a menu that lists the supported commands...

AV in older Macs is usually done by DMA into the frame buffer of a graphics controller. This reduces work required by the CPU. I'm not sure if it affects RAM bandwidth if the video data is going directly to VRAM. Benchmarks to compare with AV play-thru happening and not happening might be...

Click the "Toggle BB code" button. Then edit the BB code. Use "Preview" to verify BB code changes. I usually edit posts as "BB code" unless I need to make a list or table or add a url to a forum post. Maybe A2 matches one of the other >hwinit fields?

Your post is missing a [ / code ] Right. I do 1000000 steps at a time usually. Sometimes 10000000. If you know where the code you want starts, then the until command works. Otherwise, you add some extra temporary watch point type code to the emulator itself to enter the debugger when something...

I think these lines are disassembled in the Part1.txt output of my DumpMacRom.sh script. I think you have that dump? The lines are 441 - 477, offset 000858 to 0008E8. Subtract 0x3c (the size of the COFF header of Open Firmware) from those offsets gives 0x81C to 0x8AC which matches your virtual...