Changes
/* Architecture */
= Architecture =
== Microcode ==
Whereas the Z80 and the 6502 CPUs use an hardwired control unit, the 68000 uses microcode instead.
To execute a machine instruction, the computer internally executes several simpler micro-instructions, specified by the microcode. In other words, microcode forms another layer between the machine instructions and the hardware.
The actual internal representation is a combination of "microcode" and "nanocode". The 68000 has 544 17-bit microcode words which dispaches to 366 68-bit nanocode words.
== Hybrid 16/32‑Bit Design ==