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Drawing lines: TWFL

[BBC Micro disc version, Flight]

Name: TWFL [Show more] Type: Variable Category: Drawing lines Summary: Ready-made character rows for the left end of a horizontal line in mode 4
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: * HLOIN uses TWFL

Ready-made bytes for plotting horizontal line end caps in mode 4 (the top part of the split screen). This table provides a byte with pixels at the left end, which is used for the right end of the line. See the HLOIN routine for details.
.TWFL EQUB %10000000 EQUB %11000000 EQUB %11100000 EQUB %11110000 EQUB %11111000 EQUB %11111100 EQUB %11111110