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The supermario source code has "STM Version 2.2, Aaron Ludtke" instead of "STM Version 2.0, Scott Smyers". The source code should explain how the STM is triggered but I'm not sure what the entry point is. Which ROM (checksum) does the Wombat Quadra have?

Check the nvram to verify that the boot device is set to the drive and partition that contains OS 9? I think the Startup Disk preferences panel in Mac OS X should change the nvram parameters correctly. Check nvram -p to see how it changes depending on what is selected in Startup Disk preferences...

Yup, the dl command doesn't give much feedback except for a reminder at the beginning in later versions of Open Firmware to press Control-D to end the download. The lack of feedback makes the dl command be able to receive characters faster (because it's not echoing characters to the console)...

Something weird happened with the dl command - 10 items were placed on the stack (according to the A > prompt)? Did you paste something different than before? In a case like that, it may be better to paste normally without the dl command so you can see what's happening after each line. The...

I would accept a fresh proper dump to see if anything interesting exists beyond byte 41. Standard PCI config registers are at least 64 bytes. All 256 is useful when a device uses config space for other registers or defines PCI capabilities. The Gazelle ROM (Open Firmware 2.0.3) has fcode for...

Connect to the Mac mini G4 in Open Firmware using telnet. https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/ Gather info about the Mac mini G4 using this command: dev / ls unselect-dev " devalias" evaluate " printenv"...

I didn't ask for the rest before. I just figure while one is in there, why not gather the other info from Open Firmware as well? The width of your output was truncated to 120 characters. What terminal app did you use to capture it? My lspci for Open Firmware requires width 550 or word wrap...

ATI graphics chips have PCI vendor ID 0x1002 and a device ID that usually composes of two ASCII characters. 0x4750, // GP (Rage Pro) 0x4754, // GT (Rage II) 0x4756, // GW (Rage IIc) 0x4758, // GX 0x5654, // VT I guess VT-A and VT-B are two types of ATI graphics chips with device ID 0x5654...

I see that the cables from the motherboard that you show in #46 for the non-SCSI side of the top half of J18 (S1 to S50) has a 6 line cable for S1 to S6 and a 34 line cable for S7 to S40 and a 7 line cable from S? to S?+6 (where S?+6 ≤ S50 probably S44 to S50)? Anyway, BOXID0 is S18...

According to the code in HWInit of gazelle ROM, the emmo pin is connected to CPU_ID2 instead of CPU_ID0. The emmo pin starts the Serial Test Manager which exists in many (all?) Power Mac ROMs. The string "Serial Test" exists starting from the first PCI Mac to the last 32-bit New World Mac ROM...

Probably not. I don't see in the schematic how CPU_ID0 is set to 0 unless R165 is removed? Well, I don't think anyone's shown a photo of that location on a pm6500 yet. The photo at #12 is for a 5500.

Thanks for that. The info should allow DingusPPC to get the gazelle ROM to select the correct ProductInfo for a pm6500. calcids () { local ohareid=$1 local idoffset=0 for theids in fp mon mb cpu; do id0=${ohareid:0+$idoffset:2} id4=${ohareid:0+$idoffset+2:2}...

Try the attached file. Copy it to the root folder of the Mac OS 9 partition. Get the partition number of the Mac OS 9 partition using pdisk or whatever. In my case, it is partition 10 (decimal). Partition Map contents (18 partitions) 1: 63 @ 1 Type:"Apple_partition_map"...

Ok, this one should work. I switched to using find-package because dev and find-device do extra stuff like output a beep on failure or change the active-package which we don't need to do. But find-package doesn't know about device aliases on B&W G3 so I have to get the mac-io alias manually...

For 6500 and some other Macs, mac-io needs to be replaced with the actual device path for the OHare chip. For the 5500/6500/TAM it should be pci1/ohare I updated the script in the probe-ids.txt.zip attachment.

Copy and paste? You would have to do one line at a time, or increase the serial text pacing delay. The Open Firmware download command dl is fastest - it probably doesn't require increasing the text pacing delay...

What exactly was the error message? What was the source for the System Folder copy? What was the destination of the System Folder copy? Try copying the System Folder to a different folder? Or use sudo cp -R to copy the System Folder?

I think I downloaded it from https://www.stuffit.com Stuffit Deluxe Mac Updates Version 16.0.5 English – Mac OS X 10.8 – 10.11 in 2018. Actually, I downloaded it from smithmicro.onfastspring.com which I guess was their online store at the time? I don't know if the update from...

I was able to do it with Stuffit Destinations.app on modern macOS (Monterey). Unarchiver.app did not like it.

I suppose that would work. Not as fun as being able to make your own ROM though.