gofar99 Messages: 1955 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, I not only remember them I used them. At one time as a portable unit to field test color TVs I had a special cartridge for an Atari 2600 that was designed to produce the various patterns needed. I probably still have it. It might be interesting to see how well some of the newer TVs are actually calibrated for color balance and purity. The alignment (horizontal and vertical lines) should be perfect as the display is a digital array.