TRS-80 Color Computer

Common card · No. 287219

The TRS-80 Color Computer, later marketed as the Tandy Color Computer, is a series of home computers developed and sold by Tandy Corporation. Despite sharing a name with the earlier, Z80-based TRS-80, the Color Computer is a different system and a radical departure in design based on the Motorola 6809E and variants of the Motorola 6847 video display generator. The Tandy Color Computer line, nicknamed CoCo, started in 1980 with what is now called the Color Computer 1. It was available in 4K, 16K, and 32K models. The Color Computer 2 (1983) was a cost reduced version with 16K and 64K models. The Color Computer 3 (1986) was a significant upgrade, adding a software-controlled option to double the processor speed, improved graphics, 128K or 512K memory, and a memory management unit. All three models maintain a high level of software and hardware compatibility, with few programs written for an older model being unable to run on the newer ones. The Color Computer 3 was discontinued in 1991. All...

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