It took a while but I got it working flawlessly on this CCTV monitor.
Here are some of the options I had to use in the config.txt.
sdtv_mode=0 sdtv_aspect=1 sdtv_disable_colourburst=1 overscan_left=33 #dtoverlay=vc4-kms-v3d max_framebuffers=2 framebuffer_priority=3The first three is declaring we are using CVBS (Composite) video and what kind. Mode is set to NTSC, aspect is set to 4:3 and disabling color so it’s mono.
The text was “falling” off the screen on the left side so I had to use the overscan option to put the video over 33 pixels to the right from the left side.
No accelerated graphics. If enabled during boot the driver loads up and then pushes the text off the screen no matter what is declared on overscan option.
The last two were set when I ran the “tvtune” command.
For giggles I might toss on the Mini vMac emulator and emulate an old classic Macintosh.
The IT Garage