Radioshack Tandy TRS 80 color computer
Photo 1: Bilby, CC BY 3.0, via Wikimedia Commons (TRS-80 Color Computer 1 front right.jpg)
Home computer, 1980, Tandy. The TRS-80 Color Computer, or "CoCo", was Tandy's home computer, unrelated to the Z80-based TRS-80 apart from the name: it uses a Motorola 6809 with the 6847 video chip and Microsoft Extended Color BASIC, and it was sold in silver-grey and later white cases from 1980 to 1991 in three generations. Its 6809 processor and the OS-9 multitasking operating system made it a favourite of hobbyists, and the Dragon 32 was a clone of it. The exact generation of this unit is to be verified.
| Years | 1980 to 1991 |
|---|---|
| Processor | Motorola 6809E at 0.89 MHz (1.79 MHz on the CoCo 3) |
| RAM | 4 to 64 KB (CoCo 1 and 2), 128 to 512 KB (CoCo 3) |
| ROM | 8 to 16 KB with Color BASIC and Extended Color BASIC |
| Graphics | MC6847, 256 x 192 in 2 colours, 128 x 192 in 4, 64 x 32 in 8 colours; up to 640 x 225 on the CoCo 3 |
| Sound | 6-bit DAC |
| Storage | cassette; 5.25" floppy drives through a cartridge controller |
| Ports | cartridge, 2 analogue joystick, RS-232, cassette, RF video |
| Price (1980) | US$399 with 4 KB |
Documentation
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