Released in 1980 by Tandy Corporation and sold through Radio Shack stores, the TRS-80 Color Computer (nicknamed "CoCo") was one of the first affordable home computers with color graphics and sound.
It used the powerful Motorola 6809E CPU and the MC6847 Video Display Generator.
This emulator includes full hardware-level cassette emulation. Load .CAS files and they are fed bit-by-bit through the emulated PIA 0 CA1 pin using FSK timing (1200Hz=0, 2400Hz=1), exactly as real hardware would. The built-in bootstrap ROM reads the tape data through the PIA registers.
Direct Binary: Load a raw 6809 binary (up to 8KB) at $A000 and press RUN.
Cassette Mode: Load a .CAS file, select Cassette mode, press RUN. The bootstrap ROM handles tape loading automatically.