I used the connector on the bottom of the viper-jet (not soldered but press-fit) press-fit on the same footprint with some leads, so I can float a cpu and attach it to a CPLD (well really an FPGA) and make it speak to a 486 (just to get better fpu).
Any updates?!
Well, more fun with an A2386 with TI486SXlc2 Upgrade!
Goldengate SLC2 shows Norton SI 7.0 at round about 55...
My modded A2386 performs like hell and shows 97.4!!!
