The 4025 Video Generator Processor (VGP) generates the video output of the Retroputer. It is capable of addressing the entire addressing scheme of 6516 CPU, and can generate a 640x480 resolution.

Specifications:

• 640 x 480 resolution, of which 512 x 384 is addressable.
• Two text modes (32 x 24 and 64 x 48)
• One Hires mode (256 x 192)
• 256 colors on screen at once, from a 24-bit palette (1 byte for R, G, and B respectively)
• 16 variable-size sprites visible at once
• Built-in 256 character tile ROM generator for alphanumeric display

Topics

Colors

Palette

Layers

Tile Sets