CXA Video Encoder (Sega Mega Drive)

the video encoding for generating composite and rgb video data from the vdp chip is the cxa1145 video encoder the cxa1145 is a super common encoder found on many retro consoles look for it near the av port on your mega drive, and here are the pinouts (image is from a neo geo aes but all pinouts are identical) rgb amplification the cxa1145 slightly amplifies the input rgb signals by around 40% as an example, a blue in signal pulsing at 0 66v will output at 0 93v