I don't know about older hardware because I started in the early '90s, but the VGA didn't have scanlines the way game consoles played on TVs had. The VGA had a

I don't know about older hardware because I started in the early '90s, but the VGA didn't have scanlines the way game consoles played on TVs had. The VGA had a built-in line doubler, and the minimum horizontal scan rate was 31 kHz. In fact, very few computer monitors at that time supported 15 kHz.