Came across this project and might purchase one during the next in-stock batch if I have money whenever that will be, to replace the CT1750 in my 386SX-25 machine. but I had a thought: Aside from the PCMIDI add-on board, is anything else expected to release for the ISA expansion header? Specifically, one could put an XT-IDE on there, or alternatively a Lo-Tech ISA ROM board, thus freeing up an ISA slot in some systems that need a BIOS extension for whatever reason. in my case I need to use a 3C509B to load an XT-IDE bootrom so I can use more modern storage solutions, as my BIOS doesn't allow for anything but the predefined Type 1-47 and no custom definition. As the PCMIDI add-on is of no use to me, the addition of something else like this would be heavily ideal for a case like mine where I'm dealing with only two ISA slots available.
With something like either of those two solutions I wouldn't need to use the network card in that slot and could instead disable the onboard video and drop in a much faster graphics card, as would be my intention moving forward. I'm actively searching for ways to do that, and if that means ponying up some international currency, I'll do it. Honestly even a board that right-angles the expansion header into an 8-bit ISA slot and some smoothing capacitors would be helpful towards that... even sounds like something I could accomplish designing, if all I'm going to do is shove an EEPROM in there. gives me a reason to learn PCB layout software. Would also need to design something to support the add-on board, but that shouldn't be too hard either.