Writing a Demoscene Intro for the ZX Spectrum

Automated excerpt

The routine I ended up with effectively streams each character in, line by line, pixel by pixel using the font data directly instead of calling the ROM print character routine. The font data starts with the space character (character code 32), so a lookup is simply font code base address + (ascii code - 32) * 8 to get to the bits for that letter. It also uses a screen address lookup much like the one from “Break Into Program”.

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