I never shared this test program here, it seems, but you can find the full article over on Vintage is the New Old. This program will work on a CoCo 2 (or emulator) that has the later 6847T1 VDG chip. If the CoCo 2 has a slash in the zero on the screen, that’s the … Continue reading 6847T1 Test Program (for late model CoCo 2s)