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Dashboard: cntr, Removed

[Elite-A, Docked]

Name: cntr, Removed [Show more] Type: Subroutine Category: Dashboard Summary: Apply damping to the pitch or roll dashboard indicator
Context: See this subroutine in context in the source code References: No direct references to this subroutine in this source file

Apply damping to the value in X, where X ranges from 1 to 255 with 128 as the centre point (so X represents a position on a centre-based dashboard slider, such as pitch or roll). If the value is in the left-hand side of the slider (1-127) then it bumps the value up by 1 so it moves towards the centre, and if it's in the right-hand side, it reduces it by 1, also moving it towards the centre.
\ --- Mod: Code removed for Elite-A: ------------------> \.cntr \ \LDA DAMP \ If DAMP is non-zero, then keyboard damping is not \BNE RE1 \ enabled, so jump to RE1 to return from the subroutine \ \TXA \ If X < 128, then it's in the left-hand side of the \BPL BUMP \ dashboard slider, so jump to BUMP to bump it up by 1, \ \ to move it closer to the centre \ \DEX \ Otherwise X >= 128, so it's in the right-hand side \BMI RE1 \ of the dashboard slider, so decrement X by 1, and if \ \ it's still >= 128, jump to RE1 to return from the \ \ subroutine, otherwise fall through to BUMP to undo \ \ the bump and then return \ \.BUMP \ \INX \ Bump X up by 1, and if it hasn't overshot the end of \BNE RE1 \ the dashboard slider, jump to RE1 to return from the \ \ subroutine, otherwise fall through to REDU to drop \ \ it down by 1 again \ \.REDU \ \DEX \ Reduce X by 1, and if we have reached 0 jump up to \BEQ BUMP \ BUMP to add 1, because we need the value to be in the \ \ range 1 to 255 \ \.RE1 \ \RTS \ Return from the subroutine \ --- End of removed code ----------------------------->