Due to a failure in filters I read:
Single-chipper is the key term, though. The Z80
isn't a single-chipper, nor
is the 64180 or the Z380, or the 6502.
This statement is ambiguous at best. While you can still buy a Z80 MPU you
can also buy both "high integration" Z80's that have peripherals etc on
chip as well as Z80 "cores" for integration into FPGA's.
--Chuck