A few many months back I obtained an Atari 65xe from AtariAge forum user ApolloBoy. ApolloBoy had originally bought this on Ebay for the price of 85$ dollars. I obtained it from him for vaguely the same price. While similar to a stock Atari 65XE, it had some external differences.

The first was, where there should be an Atari Badge, a sticker had been places that says 'Computer Orthoptics (tm)'. There is also a piece of masking tape on the side with a serial number of sorts: A1511009678. This means at some point in this computer's life, It had been used in a Optometrists Office or similar setting that works with equipment related to eyecare. Most likely to control some sort of machine or machines.

ApolloBoy eventually contacted the company, which was still in business all these years, and got reply from the parent company 'Home Therapy Systems'. They did not have a partnership with Atari, so most likely purchased them and modified them. And speaking of modifications- the inside of the unit has been modified with a jumper to prevent stock Atari 65XEs from running their software! This jumper sits between pins 3 and 10 on the GTIA. This means it pushes the button on Joysticks 3 and 4. Since the Atari 65XE only has two Joystick ports, 1 and 2-- this acts as a form of hardware check for 'Computer Orthoptic's Software' to make sure it's running on their modded system.

Sadly, that's where the story ends when it ends up in my care. It works as a standard 65XE and anything I've run on it hasn't had any problems yet. I am looking for some software for this- though it isn't a priority, just-- some interest on what it looks like.

Just thought I'd tell the story of one of the odder pieces in my collection!

Original Source: https://atariage.com/forums/topic/303349-%E2%80%9Ccomputer-orthoptics%E2%80%9D-65xe-variation