The CoCo wiki project was started on October 29, 2004. --OS-9 Al

From CoCopedia

CPUTYPE

CPUTYPE can be used to identify the CPU installed in the computer.

Syntax: CPUTYPE

It returns

CPU: 6809

or

CPU: 6309, running in 6809 mode

or

CPU: 6309, running in 6309 native mode