>> the 68060 is completely hard-wired while the 68040 and prior use microcode.

> I don't believe this to be true of any 68k processor, but we can check.

"MC68060 [...] is all hardwired - there is no microcode in it."
http://www.faqs.org/faqs/motorola/68k-chips-faq/

From the Freescale/NXP website:
"The Motorola 68K family consists of a wide range of members from the micro-coded MC68000 to the super-scalar, hard-wired MC68060."
https://www.nxp.com/docs/en/supporting-information/MC680X0OPTAPP.txt

From Motorola's Jim Reinhart:
"the 060 execution units are fully logic driven (i.e. no microcode)"
http://www.verycomputer.com/154_1d1b5950dff465d3_1.htm#p4

From Thomas 'thor' Richter:
"In 1982, CISC CPUs where mostly controlled by microcode, hence slow. A 68K required multiple cycles for a single instruction [...]. 68060 was hardwired again, and could run many instructions in one cycle [...]. [...] the 68K is microcoded. The 68060 is not [...]."
http://forum.amiga.org/index.php?topic=71284.msg812454#msg812454
http://forum.amiga.org/index.php?topic=71284.msg812522#msg812522


Edit: added another quote
Edit2: corrected some obsolete links

[ Edited by Andreas_Wolf 06.01.2020 - 14:08 ]