Oh nice. It would be really awesome to see a homebrew socket-7 or super socket-7 system. The only thing that comes to mind that's not stupid expensive would be

Oh nice. It would be really awesome to see a homebrew socket-7 or super socket-7 system. The only thing that comes to mind that's not stupid expensive would be getting a PCB manufacturer to solder a 500 or 700 pin Lattice ECP5(-5G) FPGA to a board for you (the FPGA in single units is like $60). You can use the trellis/nextpnr open source toolchain with those. You'd probably need a 6 or more layer board, which isn't the cheapest thing... I'd been doing a M68K board with an ice40. I got some 68010's with the intention of implementing an MMU for funzies. Maybe try to boot Linux (sloooowly) on it. Got side tracked with a different project I thought would be more useful for people :)