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Elite on the BBC Micro

Dashboard: SPBT [6502SP version, I/O processor]

Name: SPBT [Show more] Type: Variable Category: Dashboard Summary: The bitmap definition for the space station indicator bulb
Context: See this variable in context in the source code Variations: See code variations for this variable in the different versions References: This variable is used as follows: * DOBULB calls SPBT

The bitmap definition for the space station indicator's "S" bulb that gets displayed on the dashboard. The bulb is four pixels wide, so it covers two mode 2 character blocks, one containing the left half of the "S", and the other the right half, which are displayed next to each other. Each pixel is in mode 2 colour 7 (%1111), which is white.
.SPBT \ Left half of the "S" bulb \ EQUB %11111111 \ x x EQUB %11111111 \ x x EQUB %10101010 \ x . EQUB %11111111 \ x x EQUB %11111111 \ x x EQUB %00000000 \ . . EQUB %11111111 \ x x EQUB %11111111 \ x x \ Right half of the "S" bulb \ EQUB %11111111 \ x x EQUB %11111111 \ x x EQUB %00000000 \ . . EQUB %11111111 \ x x EQUB %11111111 \ x x EQUB %01010101 \ . x EQUB %11111111 \ x x EQUB %11111111 \ x x \ Combined "S" bulb \ \ x x x x \ x x x x \ x . . . \ x x x x \ x x x x \ . . . x \ x x x x \ x x x x