homescreen

README

I've made a short go program to "scale up" the original +2A home screen into one that is 1920x1280. It outputs the pixel data which can be used to populate the framebuffer, for the first pass. In the final version of the ZX Spectrum +4, the home screen will be drawn, rather than stored as a huge image binary, but for the purposes of getting things going, and designing the new home screen, this was a quick way to render something in the appropriate resolution (1920x1200).

When you run it (e.g. with go run homescreen.go) it will generate screen.png which is the home screen. It will write the raw pixel data in hex to standard out, which can be embedded in the kernel for the first experiment. Each line is a single pixel, stored in 32 bits: (8 x red, 8 x green, 8 x blue, 8 x transparency).