HP1345A (and Wargames) – PHKs Bikeshed

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The author reverse-engineered the character generator of an HP1345A digital vector display.
The HP1345A has two built-in service modes with specific glyphs for alignment and focus screens.
The focus screen is displayed by an i8748 microcontroller when a jumper is mounted.
The original and newer Character ROMs differ only in the comma glyph.
The focus-window glyphs exist in two aspect ratios, hinting at a possible 1:1 aspect ratio option.
The movie WarGames (1983) featured a plot involving a kid accidentally triggering a nuclear war simulation.
WarGames is notable for its themes, including the Cold War, game theory, and social engineering.
The movie's graphics were designed on an HP9845 computer and drawn on an HP1345A vector display.
Some alphanumerics in the movie were generated as vectors, not matching the HP1345A's character generator.

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