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Interesting about the 256 MB modules in a Genesis, as a careful reading of the PCI Power Macintosh Hardware Developer Note and what memory chip addressing schemes are supported will lead to the conclusion that 128 MB per DIMM is the maximum supported. The 7200 on the other hand, clearly...

The jumpers represent different powers of 2 and they're additive. Hence, 0 => 2^0 =1; 1 => 2^1 = 2; 2 => 2^2 = 4. For example, jumpers on 0 and 2 gives you 1 + 4 = 5, so SCSI ID 5. Jumpers on 0, 1 and 2 would give you 1 + 2 + 4 = 7. Some devices actually label the jumpers 1, 2, and 4...

I appreciate the info because I was wondering why I have a small unopened tub of EM-30L in the garage...

I saw in your original post, you have the AV version. Are you testing with the AV card installed? An empty PDS slot could cause problems. On your CDROM drive, is it possible you have all three SCSI ID jumpers installed? It's been a long time but I think I only saw that repeated device when...

I had a near identical issue with an ixMicro Ult. Rez. card back when they were new and shiny. ixMicro told me the symptoms were definitely a bad VRAM chip and replaced the card for me. That issue also moved around with differing resolutions. The VRAM storage gets interleaved in different...

Except some very early 9600s, the ROM chips are soldered to the logic board and the ROM DIMM socket is empty. However, the ROM DIMM socket and DIMM module are designed such that installing a ROM DIMM module in the socket will disable the on-board (motherboard) ROM chips. One of the pins in...

@Cory5412 @cheesestraws @mdeverhart Already done back around 2002, see top board in images. Sorry I missed this when it was current. I didn't have much time for forums last year. Do not exchange ROMs between the Beige G3 and the X500/X600 series. The Beige G3 module is wired for...

I'm not sure @jimjamyahauk ever installed his. It has been almost 15 years since the start of hte project and he's moved a few times and I think started a family in that period. I'm not sure, but I think his 9700 is stored away and not easy to get to.

No problem. It' s just new information to add to the pot.

Interesting. Thank you. I have a 2-chip Rev. C with Apple part numbers and several 2-chip Rev. As all with the same (as each other) Apple part numbers on the chips, but the only Rev. B I've ever had was actually a Flash module with multiple chips, so I've never gotten teh chip numbers for the...

AFAIK, all Beige G3 ROMs work in all Beige G3 motherboards. I've never heard of a failing combination.

Yes, there were reports way back when that the Rev. C broke compatibility with some obscure brand of Wifi card, or something like that. REallly old memory. I don't recall hearing it caused problems with Tango Trio, but it is not surprising. Apple, of course, never disclosed how a C was...

Are you sure that's a Rev. C. From the chip number, I'm thinking it might be a Rev. B instead of Rev. C. The ROM Revision in Apple System Profiler is different. Trails "F2" vs. "F5", IIRC.

They pretty much look the same, except that the chips have different Apple part numbers on them, depending on version. There were some circuit board revisions with changing part numbers, but you can't tell the ROM version from the circuit board part number, as they each overlapped with...

Most (all?) of the inexpensive adapters do not have a jumper for setting master/slave. This one is pricey, but actually is built properly with a jumper. https://www.amazon.com/Ableconn-IIDE-MSAT-2-5-Inch-Converter-Aluminum/dp/B017VQT5YW?th=1 I think StarTech may have a good one as well, but...

If the IDE to SATA chip is a newer JMicron JMH330, which is fairly common, then it is always set to Master. You cannot change it to Slave by changing resistors. They also sell a JMH330S which is permanently a Slave but I've never seen one in the wild. The older JM20330 is changeable with...

Excellent work. I installed a couple of the Newlife 1's back in the day. Any chance you can track down the Outbound folks and do the same? Corey Burton (IIRC, memory is hazy) was trying to make a go of providing support for several years after they shut down.

Thank you. I have a local copy, but that was a kind offer. I'm not sure I would glorify my collection of files by calling it a "site". It's just stuff I've thrown up into on-line file space over the years for convenience as circumstances dictated.

My ISP of 25 years shut down or will soon. File is now located here: http://sphinxgroup.org/Apple_pinouts/Firmware_Module_Pinout.txt

Still looking for the delete button. POsted too soon.