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I was mistakenly looking at the info for Slot 0 (the motherboard slot) 🤷‍♂️

SlotRom Alpha should write out debugging information to a file named "dbglog". Can you post that file here?

fhByteLanes is set to 0F - that means that all four lanes are valid. Which is strange because both ERS and SuperMario source code assume one-byte MSB DeclROMs for PDS/VDS cards.

First of all, many thanks for dumping the DeclROM of your HPV card with SlotDump and SlotRom! The first 64K of the SlotRom dump seems to match the earlier dump posted here. The second 64K seems to contain garbage. The fact that both dumps made with SlotRom don't contain the expected Nubus...

That HPV card has been designed for the PDS slot of a first-generation Power Macintosh computer equipped with a MPC601 CPU. It should work in a Power Macintosh 6100, 7100 and 8100 whereas the former requires a proper right-angle adapter like this one. Keep in mind that the PDS slot in Power Macs...

Sorry for being off-topic but did you have a dump of the DeclROM (U13) seating to the right of the big VLSI ASIC (DAFB video controller)? I'm working on a Power Macintosh emulator called DingusPPC that already emulates that HW. To emulate that video card, I need the driver stored in the above...

The ROM chips mentioned here look like 128k x 8 bit CMOS MASK ones, probably a KM23C1010-15 or similar Samsung components. The 341S0020 dump posted here is 64K. It supposedly misses the second half.

It would be nice to have DeclROM dumps for the following Apple video cards: Apple HPV card, ROM is U13 (341S0020) Apple AV card, also known as "Planaria" card, ROM is U32 (341S0066) Although both cards have been designed to be used in the PDS/VDS slot of a first-generation Power Macintosh...

PM 5500 also use Open Firmware 2.0.3 and supposedly the same ROM as PM 6500 and TAM. I wonder what CPU_ID has been assigned to it. Do we know TAM's CPU_ID?

Where did you get this ID mapping from? Yes, that's right. Bit 14 corresponds to bit 6 of the Media Bay DEV_ID subregister. The IDs register at 0xF3000034 actually contains four 8-bit registers: CPU_ID (bits 0-7), Media Bay DEV_ID (bits 8-15), MON_ID (bits 16-23) and FP_ID (bits 24-31). I...

Those resistors are wired derectly to the OHare ASIC, see U5 (343S0172). They form the so-called BoxID that can be obtained by reading OHare's CPU_ID register. Disassembling of the logic board is not required. The OHare CPU_ID register is located at 0xYY000034 where "YY" represents the base...

IIRC, both Voodoo 1/2 doesn't have any flash ROM on the card so there is nothing you can "reflash". Those cards come with a special cable that allows to switch between the on-board video and the 3D card outputs.

Almost every Power Macintosh model uses its own ROM. Some parts of it contains common stuff. But the HW specific part varies from machine to machine. That's true for built-in drivers as well.

It's surprising that the said B&W G3 schematic doesn't reveal where the PRSNT pins of the PCI slots are connected to. It seems there is no way for SW to obtain this information on this machine. The predecessor of this MB - the Gossamer board - implements a system register that reflects the...

Many thanks! (y)

Hi crews, did anyone ever see the schematics for the Power Macintosh G3 B&W aka Yosemite? I was able to spot schematics for some Power Macintoshes on this forum. There is a page out here that offers schematics for PM G3 Beige and some G4 Macs as well. Unfortunately, no schematics for Yosemite...

There is some code in the PDM ROM that looks for a predefined signature in the DeclROM to see if one of the Apple video cards is installed in the PDS (aka VDS) slot...

Many thanks! I wonder how this card is recognized by the system software without a proper DeclROM.

Does anyone have DeclROM dumps for the Apple HPV cards used in the Nubus Power Macintosh 6100/7100/8100?

I would love to learn more about that extra chip. Is it an off-the-shelf IC or an ASIC?