What is the difference between a CM5 and a CM11 (or a CM2 or …)?
The CM5 and CM11 are both CGA monitors. The difference is the resolution. The CM11 is much clearer due to its smaller dot pitch (and was about half again as expensive as the CM5). Some say the CM5 can’t display 640×200 graphics. That is a function of the controller, though, not the monitor. The CM5 will work in all Tandy graphics modes. Whether it looks good is another story. The CM2 and CM10 are older versions of the CM11. The CM4 is an older version of the CM5. The CM1 is another animal entirely. It was a color monitor made for use with the Tandy 2000 and had a resolution of 640×400. Tandy made at least three video cards that would permit the CM1 to be used with an IBM PC. With the Deluxe Text Display Adapter, catalog number 25-3046, the CM1 displays only text. With the Deluxe Graphics Display Adapter, catalog number 25-3047, the CM1 can display CGA-compatible 640×200 graphics, or 640×400 graphics with special software. With the Enhanced Graphics Adapter, catalog number 25-4037, the
