Z80 Model 4 vs 6809 Coco Retro Speed Challenge @RetroLogicLaboratory
Z80 Model 4 vs 6809 Coco Retro Speed Challenge  @RetroLogicLaboratory
Uploaded December 2018 | Updated September 2026, 1 week ago
I always wondered what computer was faster, the Radio Shack Color Computer with its fancy 6809 or the TRS-80 Model 4 with the proven Z80 processor. So i tested the Coco 3 vs. the Model 4 in "Model III Mode", which means 2MHz clock and 64x16 text screen.

In this video I run a few tests using the built-in BASIC languages that are in the ROMs for both machines.

Music by Bensound: bensound.com


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Z80 Model 4 vs 6809 Coco Retro Speed Challenge

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