Inside a Classic: The TRS-80 Model 100

Inside a Classic: The TRS-80 Model 100 prev next


All Aboard the System Bus

The Model 100's designers blessed the unit with ample expansion potential, especially for a compact computer of its size. You could connect an external floppy disk drive (the "Chipmunk" third-party drive was a popular option) or the Model 100's Disk/Video interface, which provided both disk-based storage and the ability to connect to a CRT monitor.
Unfortunately, most of its powerful expansion options had to squeeze through an inconveniently located 40-pin expansion bus on the bottom surface of the unit, seen here. Immediately below that, you'll notice a free slot for a user-provided software ROM chip, which proved essential in extending the 100's usefulness. It allowed users to add software for spreadsheets, bar code scanners and the like.

Prev Next 2/16

Comments on this image

There are currently no comments for this image.

Post new comment

Users posting comments agree to the PC World comments policy.

Login or register to link comments to your user profile, or you may also post a comment without being logged in.


Inside a Classic: The TRS-80 Model 100

16 images

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?