HDMI and DisplayPort would require far too much of this tiny, 80s-era computer, and it’s getting hard to buy a composite monitor. This meant it was time to build a VGA video card from some ...

The VGA card in the computer is cabled to the pass-through circuit on the high-res adapter. When high-resolution is not used, the card's driver causes the VGA signals to pass through to the monitor.

Feeling nostalgic we presume, [Glen Kleinschmidt] set out to build a 640x480x64 VGA controller card from discrete logic ... Check out his analog computer “bouncing ball” project we covered ...