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That card looks exactly like my original OrangePC which does use the OrangePC 3.8.2 software. Post #144 on this thread has a photo of my card, but a lot of it is covered by the sound card in an ISA riser. This card has a Chips 82C836 chipset and gets its BIOS from the OrangePC application; I...

I believe that the card you are describing is the Orange386, which is not compatible with the "OrangePC" software. The only place I have managed to track down the software for it is here: https://vintageapple.org/macdrivers/cards.shtml . I do not own one of these cards to dump the DeclROM. It...

My cards are packed away in boxes for moving right now. But if you can't get part numbers from others, I should be able to get them within a month or so.

Yes, it did provide an increase in benchmark scores. The speedsys CPU score increased by 5-10 points and the "move" memory test was significantly faster. A DX4 with WB should be enabled by default on a 290 if it is set to 3x multiplier and has the bodge wire on the back of the CPU socket. If the...

Yeah, everything else is placed in the resource fork of the OrangePC application. The application is where the BIOS lives and is passed into the card when you start it. What is in the DeclROM looks like just enough to get the mac to know that there is a NuBus card there so it can report it to...

My previous post #137 on this thread has dumps from the original OrangePC (200.bin) and the OrangePC 2 (220.bin). When I say "Original OrangePC" I mean the one with a single 16 bit ISA slot and 386sx/486slc. The OrangePC 2 is the 200 series. I desoldered the DeclROM chips and put them in an...

Thanks for the tip, I'll give that a shot. It booted in seconds before I installed the OPTi driver I found on Vogons.

I've also finished modding my original Orange PC. The clock doubling and 8k of cache works perfectly on the TI486SXLC2 I installed. I tried overclocking it, but the OrangePC application reports errors on start even when I run it at 30MHz, so this card is basically not over-clockable. The 25MHz...

I have completed all of the upgrades and can confirm that everything is working. The DigiKey lists above are updated to be accurate as to the parts needed for each upgrade. I did run into a fake PCMCIA chip from China. I got one real one on a second order, so your mileage may vary. Harvesting...

I have finished my journey with the Orange PC 2 hardware upgrades and everything is working great! For those just tuning in, my card started life as a "220" with only serial/parallel. I added L2 cache and PCMCIA to give it all of the features of a "290". I even got write back cache working on my...

I finally got around to testing a 3.3v AMD Am5x86 in my OrangePC 2 and it works! Well, mostly. First off, it just refuses to POST when set to the 3x multiplier. I believe that the issue isn't so much with the multiplier itself, but the fact that the bodge wire enables write back cache when in 3x...

@micheledipaola thanks for the photos! You have finally confirmed the value of R22 for me at 220Ohm, which was the last component I hadn't been able to reverse engineer on the cache circuitry. The ICs around the cache are also confirmed to be what I thought they were (which I had assumed at this...

More updates on OrangePC shenanigans: Naming clarity: After digging around more in the resource fork of the OrangePC 3.8 application and looking at the decl ROM contents on my NuBus OrangePC cards, I have determined that the card with a 386sx/Cx486SLC and single ISA slot is just called the...

I dumped the EPROMs on both my 210/220 (card has 220 written on it, so that is what I'm calling it) and my card simply labeled "OrangePC" (Cx486SLC with one ISA slot) which I'm calling the "200". There really isn't anything in them besides some basic identification info, but I'll upload them...

I have determined that Serial/Parallel may also require an LT1141A. It looks like DigiKey does have these, but they are quite expensive (for a single IC). Then again, given what these OrangePC cards sell for these days, it is still quite an inexpensive upgrade. If your card is missing all...

I'm actually starting to think that my Am5x86 is somehow broken. I tried putting it back into a Houdini II DOS card that it was previously known working in and I can't get it to POST there either, regardless of cache settings. I think I'll try to get a 3.3V Am5x86 and test that once I install...

I have managed to reverse engineer how the potentially missing features of the 2xx series OrangePC cards work and have put together some DigiKey lists to help others add missing functionality to their non-290 cards: Cache PCMCIA. Additionally, requires a PCMCIA card cage and a CL-PD6710 for...

I have some more updates on my quest transform any 2xx series card into a 290: Thanks to @nickpunt , I was able to determine which resistors and capacitors are needed for adding serial/parallel. I have since broken up my DigiKey list into separate ones for each piece of potentially missing...

I am running my tests in a Quadra 650 overclocked to 40MHz. I can confirm that full screen video is kind of bad in most cases. Sometimes, when launching an application, the color gets stuck in grayscale. Switching out of, then back in to fullscreen will make some applications appear in color and...

Thanks! This will definitely be helpful when trying to add the PCMCIA to my card. It also looks like most of the logic chips are populated under the PCMCIA card cage on your card? If so, serial/parallel really would just be a matter of adding the GoldStar Prime 2C (or compatible), the 24MHz...