Wrong machine
for the job. Everybody knows that a
Timex-Sinclair is the
best doorstop.
I don't know. Something heavier is probably better. Maybe a
PET?
A small mini/deskside would certainly hold a door open well...
or anything in a BA23 enclosure with floor-stand.
There are two basic types of doorstops: heavy inert mass, and wedge.
The wedge does not need to be heavy.
A commodore 128 also might have a chance of actually
wedging into
the space between the door and the floor.
The Times-Sinclair will almost always function properly as a wedge. The
Commodore 128 is too thick for many doors.