CoCos and Dragons were completely different than the original TRS-80; the CoCo only carried the TRS-80 badge for it's brand recognition. Even amongst actual TR

CoCos and Dragons were completely different than the original TRS-80; the CoCo only carried the TRS-80 badge for it's brand recognition. Even amongst actual TRS-80's, the Model I is only partly compatible with the Model III and Model 4.