Also how the V30's 8080 emulation mode was implemented. I wonder if it's "just" some clever microcode or if it required substantial extra die area. It was a g

Also how the V30's 8080 emulation mode was implemented. I wonder if it's "just" some clever microcode or if it required substantial extra die area. It was a great way to run most CP/M software (the exception being software for the Z80 which used LDIR etc which the 8080 lacked and the V30 therefore didn't bother emulating).