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I don't really know, but the chip appears in the 6500 datasheet.

It looks like you have the 6500 schematic, the comm slot is on the same page as the PCI slot in there. Comm Slot II cards appear to have one interrupt pin instead of several like PCI slots. And on the 6500 the CS II interrupt goes to pin 64 of the OHARE chip.

Pico 2 uses a new chip, the RP2350A. It has twice the working RAM as its predecessor, and also twice the program storage (this is on an external chip, but 2x is 2x). Overall it will allow for more features, some of which will have to be Pico2-only due to RAM and storage restrictions on the...

It's possible, but I don't really know. Tried some random MAC addresses during testing and not all of them worked. That's part of the reason there are three: those ones worked properly. Yeah it's pretty funky stuff. Doesn't print amazingly well, but still "good enough."

I'm also very curious to see what your results show - should be quite interesting.

The listing is live on my site now: https://androda.work/product/comm-slot-ii-10-100-ethernet-cards/

The production order has arrived, so I'll be testing and listing the cards as fast as my spare time permits. Note that I am away all of next week, hence the blue popup on my site saying that shipping will be delayed.

I mean, if you want a Gigabit Ethernet Comm Slot II card just let me know. I definitely didn't find some Gigabit Ethernet PCI chips which are compatible with OS 9. (though honestly that would be minimal to no benefit over 10/100 due to Mac OS bottlenecks and OS compatibility limitations)

No, I made this adapter for ease of testing these comm slot cards during production. Overall though, I figure most PCI cards would work in the comm slot since it seems to just be "PCI Slot E1".

My latest experimental PCB arrived, a CS II to PCI interposer/converter. Note that Comm Slot II is not a direct pin to pin mapping of PCI, so this does change pin assignments. But it really is just PCI. Works fine with my Ethernet CS II card. Yes, I'm using a PCI slot for where the CS II...

Did a little more testing with the 7300's built in "plain 10" Ethernet port. ~170kB per second in 9.1 using iCab, sometimes spiking to 200kB per second. This at least helps to show that it's not 100% the driver's fault. Downloading from the internet in general seems to be very slow and...

It's not something I've really ever done before. I've used "mouse bites" as they are called to make boards that can be snapped apart. But not for modular implementations like this, where you can just break part of the board off and things are still ok. Something to think about though.

I've never set up modern FTP or AFP servers before. Have any pointers on how to do this? I did try some FTP host software from the Garden but that only resulted in about 80kB per second download speed.

Ah, we were saying basically the same thing. This is what I meant by "second half", adding a breakout or shortening to use this style connector. Are there panel-mount Ethernet ports that have the necessary magnetic components inside? The Ethernet jack I picked for this use case have that...

Tested putting a 10/100 switch between this CS II card and my gigabit network, no change in download speeds from Macintosh Garden. ~100kB per second on the 6400 CS II running 7.6 using Netscape ~150kB per second on the 6400 CS II running 9.1 and iCab ~150kB per second on my 7300 original PCI...

Almost certainly, yes. 100 megabit Ethernet would probably saturate NuBus entirely - though it's a 660, very nice 68k machine overall. If you could just download something "large" from the Maintosh Garden like the Tie Fighter install sit file (over 200 megabytes total, don't need to pull it...

It's 150KB per second, kilobytes (not bits). Maybe something is up with my switch, just haven't been able to run down the networking permutations yet. I do have an older 10/100 switch that could be placed between the device and upstream to see if it helps - was hoping the native 100 megabit...

This is a two-layer PCB. The extra-long length to match the original doesn't add a lot to the overall cost when made in larger batches. Adding a second half that sits where the bracket goes is complexity that I would like to avoid. Help me understand what the TAM/CSII riser is for - two PCI...

This is a stealth project I've been slowly working through for some time now. With Comm Slot II Ethernet cards being hard to come by, and often for high prices, it seemed like a decent target for recreation / re-engineering. My approach here was originally going to be "remake the official...

Looking at the schematic, PDS pins 2 through 4 on columns A, B, and C are all the main 5v source. There aren't any control signals mixed in over there to cause problems. This gives me one idea for why it might cause problems: accidental inversion of the intended pin. If the measurement was...