Carlos Rodrigues 🪣 on Nostr: As a side-note, VGA's 320x200 was actually 320x400 on screen. Each line of pixels was ...

As a side-note, VGA's 320x200 was actually 320x400 on screen.

Each line of pixels was drawn as two CRT scanlines – called double-scan. You can say it made the picture look "chunkier" with scanlines less prominent.

Not to be confused with double-strike, which was using the same (even or odd) scanline in consecutive half-frames (fields) on a CRT meant for interlaced video. This allowed for full 60/50Hz frame rates, at the cost of making scanlines more prominent.

3/3 🧵

#retrocomputing #vga #crt