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Elite on the BBC Micro

Version analysis of TWOS

This code appears in the following versions (click to see it in the source code):

Code variations between these versions are shown below.

Name: TWOS Type: Variable Category: Drawing pixels

Code variation 1 of 2A variation in the comments only

Tap on a version to expand it, and tap it again to show to all variations.

Cassette, Flight, Electron

6502SP, Master

Summary: Ready-made single-pixel character row bytes for mode 4
Summary: Ready-made single-pixel character row bytes for mode 1

Code variation 2 of 2A variation in the comments only

Tap on a version to expand it, and tap it again to show to all variations.

Cassette, Flight, Electron

6502SP, Master

Ready-made bytes for plotting one-pixel points in mode 4 (the top part of the split screen). See the PIX routine for details.
Ready-made bytes for plotting one-pixel points in mode 1 (the top part of the split screen). See the PIX routine for details.
.TWOS EQUB %10000000 EQUB %01000000 EQUB %00100000 EQUB %00010000 EQUB %00001000 EQUB %00000100 EQUB %00000010 EQUB %00000001
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