Evidently Zenith Z100 9 pin color output is the same signal and pins as IBM CGA. I used the same setup to test this as I did with CGA. I used the video DAC from here:
http://bit-c128.com/ coupled to a GBS-8200 scan doubler. On the Z100 video board, I set jumpers to positive H and V sync (also not composite). This seems very stable
and sync locked in place much better than my test with IBM CGA. Zenith rocks !!!
Here is some photos using the color test in the bios and diagnostics:
Fun stuff !!!
Larry G
http://bit-c128.com/ coupled to a GBS-8200 scan doubler. On the Z100 video board, I set jumpers to positive H and V sync (also not composite). This seems very stable
and sync locked in place much better than my test with IBM CGA. Zenith rocks !!!
Here is some photos using the color test in the bios and diagnostics:
Fun stuff !!!
Larry G