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improve scroll region function #159

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improve scroll region function #159

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Commits on Jan 15, 2024

  1. improve scroll region function 

    fixes scrolling background colour issue - the new area of screen will now always be filled with the current text background colour

also adds support for movement directions 4-7, which move dependent upon the currently set cursor behaviour bits (see VDU 23,16)

adds support for movement amount of 0, to indicate move by 1 character in the given direction (as per Acorn’s implementation)
    @stevesims
    stevesims committed Jan 15, 2024
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    fd31586 View commit details
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