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I quickly added support for raw binary files. But hey, that would work too. You'd just need to add linebreaks to separate each data frame. Edit- I quickly looked at the Carrera bitstream you attached. Turns out it contains two bitstreams in one -- one for a XC3020 and one for a XC3042...

The .rbt file is a text version of the raw bitstream. You get whatever comment lines at first, then a 40-bit preamble, then the data frames as required for your FPGA, then 4 stop bits. You can open a .rbt file in Notepad and it's lines of 0s and 1s. If you know the frame length and number of...

I put up the XC2018 stuff on Github, over here: https://github.com/Arisotura/xc2018 The demo is available here: https://blargcity.kuribo64.net/xc2018/ (https://blargcity.kuribo64.net/xc2018/emulator.html for the emulator) I also attached a .rbt of the XC2018 bitstream for anybody interested...

I think I can put up my XC2018 work on Github today, will just need to clean up some tidbits. I could even put up a demo of it on my server. It would include my emulator thing -- the labels and definitions I added to that are for the Lapis PCS, but they can be changed in the code to match...

Yup -- these are the same family, so the base hardware should be the same, but in different amounts. Like how I was able to extrapolate the XC2018 layout from Shirriff's XC2064 work.

Status update. I added an emulator of sorts to the XC2018 visualization tool I have, which seems to mostly work. There are probably still details to work out. I'm thinking of putting it up on Github, could be interesting. I also made progress on the XC3030 front. I figured out all the switch...

I'd need to look at it again when I'm back home, but I think A28..31 are compared against ground (which would be a $F given the NuBus address lines are inverted).

The card ID is checked by U12 (8-bit comparator), one side of it connects to the address lines and the other to the NuBus ID lines, then the comparator output goes to the XC2018. Also, iirc, the comparator is connected to A24..28, which would mean this card only supports standard slot space. I...

Fun thing I just noticed. When I created this thread, I pulled a picture of the Lapis PCS from a quick Google search, mostly because I was lazy. I looked back at it yesterday, and it turns out that the card in the picture is mine. Other than that, I was thinking about all the FPGA stuff...

Lil' update on this. I've been looking at the XC2018 stuff, but I'll need to work on making sense of the more complex logic. I have some bits of it figured out though. I'm also starting to look into the XC3030. Figured out some bits here and there, still a lot to go. The good thing is that...

I worked out most of the connections. I quickly made a list for the connections to the FPGA chips. There's still a bunch of unknowns there. I found Ken Shirriff's XC2064 reverse-engineering work, which is going to prove interesting here. The XC2018 is basically a scaled-up version of the...

Thanks for the info! You seem to have already done some work with this card, that's interesting! BTW I provide a version of the PROM dump with the same bit order as what's in the NuBus ROM (LSb first, MSb last). I figured it makes more sense this way.

I found out that the chip at U13 isn't an op-amp or something of that kind, it's a Xilinx XC1736 -- a serial configuration PROM. It holds the configuration for the XC2018. I whipped up a quick Arduino sketch to dump the contents of that PROM. I attached the dump if that's of interest. I stored...

I figured I might as well make a thread for this video card, as it piques my curiosity. I did get that card a while ago, but didn't do much with it at the time. Reason was that I couldn't really get it to work with much. I looked into it again lately. It does work with one of my monitors...

Here's the ROM from the Lapis ProColorServer 8 II (NuBus) I have here. I dumped this straight from the ROM chip. I don't know if the card does anything fancy with the address lines.

That's dust. The power supply is in good condition, I didn't see any leakage or corrosion. David Cook, I'm amazed at how clean the smaller daughterboard is in your power supply. It's like, in pristine condition. Mine was basically toasted and had weak traces/joints (but oddly enough the...

A while ago I got a Macintosh IIsi. Gave it a quick test when receiving it, and it was starting, although the HDD would just keep spinning down. The motherboard had leaking caps, as typical, but the power supply (of Plessey brand) was absolutely clean, no traces of leakage whatsoever. I still...

Lil' update... I ordered replacement chips for the ROM SIMM, I have been given PLCC ones instead of SOIC, so... Probably the most cursed ROM SIMM out there, but the connections are all good. (I have since gotten one of these SIMMs that can be reprogrammed, in case this thing fails again) I...

Status update on this: I suspected the fault with my IIfx could be either the CPU, the FPU or the ROM. I got a SOIC32 adapter so I could test the ROM chips on the ROM SIMM. Turns out one of these is bad. I'm going to see if I can get a replacement.

I just used these, they fit well. The original buttons aren't anything fancy, they're similar push buttons but mounted at a 90° angle, and they rest against a plastic holder that can be separated.