The Raspberry Pi can now output interlaced composite video
While early Raspberry Pi single-board computers featured composite video out, newer models have HDMI video out and display parallel interface (DPI) output for things like the Raspberry Pi touch display. Playing classic games on HDMI and DPI lack the look and feel of playing the originals on televisions, which were NTSC or PAL with alternating video frames.
Nick Hollinghurst writes that hacking the DPI output and using the Programmable Input/Output (PIO) block capability new to the Raspberry Pi 5, alternating frame video may output. It does eat up GPIO pins 0 and 1, which precludes some I2C use. But the look and feel is fabulous.
Check out all the details in the post here. The code is on GitHub.
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