VCE Y channel update
I got my turborom board working along with my usb rom programmer. Only 128k at the moment, but it’s better than nothing. Once I get a par port option setup again, I can start using the tototek card for larger rom tests.
Anyway, I did what I said previously. I cut the R-Y and B-Y traces from the composite build circuit. So nothing but Y is being output. Which is different than just turning off the CB in bit 7 of the VCE. That would give you a bias to the Luma chart because R-Y and B-Y are still there.
So, this is a pure look at the Luma stepping from the VCE rgb to yuv rom table inside the chip. There are a total of 32 luma levels. Can you spot them all? 😀