Anybody willing to help me out? Recently I managed to get a PCI ATI Rage 128 GL (Macintosh version, as the seller informed me), and decided to fit it into my Beige G3 (System 8.6). I've never before replaced a graphic card in my old Macs, and for the love of God, I just can't get this thing to work!
It does show in the System Profiler as a "display card", with the correct vendor ID, but other than that no info is available. The plugged in VGA monitor is also apparently not detected. I've tried using a variety of drivers from the ATI driver archive, but they either didn't make any difference, or couldn't be installed, as they returned a "no retail ATI hardware detected" error. Any idea what I'm making wrong? :D
There are .1" pitch ribbon cables. I don't think I've ever seen a premade cable with a Euro-DIN connector on the end. I'm also pretty sure that the easily available ribbon cables don't go past 40 or 50 conductors. I looked into trying to bring the SE/30 CPU socket up with ribbon or flat flex cables some years ago.
Seems like a good lead. I can check my the floppy connectors on my Classic II and SE SuperDrive to see what the "working" behavior is like. I always check voltages at the floppy connector first, since it's easy to access and feels "safe" to probe around in. I'll be home to check that on Friday.
I wonder if swapping the ROM SIMM with a known working one would be a good test. There are also aftermarket solutions like the ROM-inator, but $42 feels like a bit much to spend on a shotgun part.
I mentioned analog delay lines in my previous reply, and I will repeat: those are not the droids you're looking for. These devices introduce delay in signals, they do not change their frequency. Frequency is what you're trying to change if you're attempting to take pixels output at dot-clock X and massage it to run at dot-clock Y. The closest digital analog to a bucket-brigade device is a dynamic shift register; both are essentially a type of memory that can only retain a value by cycling the bits through it, and the bits can only be read off at the same frequency as they were written in.(*)
(* Okay, that's not *entirely* true, I think in theory you *might* be able to fill a bucket brigade device and then clock it down or up and play it out at an alternate rate, I don't know enough about the devices to know for sure, but the sample length actually stored in them is very short, and that's at audio frequencies. These antique devices simply will not work for video applications; there's a reason why they've been almost entirely replaced with digital sampling and RAM.)
Also, just for the record, what "didn't sound right"? You explained it yourself that a "Gate Valve" controls water pressure, and the electrical analogy to water pressure is voltage. Again, pixels are *transitions* in voltage. A plumbing analogy to that might be vibration from water hammer or rapidly slamming the valve open and shut again? Sorry, but I don't know what plumbing apparatus exists to take *vibration* from a pipe full of water and magically change it so it's vibrating at the same amplitude but at a different frequency. (IE, preserving the information embedded in the vibration but "de-clocking" it from the source.)