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Maths (Geometry): SCALEY2

[BBC Master version]

Name: SCALEY2 [Show more] Type: Subroutine Category: Maths (Geometry) Summary: Scale the y-coordinate in A
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * TT105 calls SCALEY2 * TT14 calls SCALEY2 * TT23 calls SCALEY2

This routine (and the related SCALEY and SCALEX routines) are called from various places in the code to scale the value in A. This code is different in the Apple II and BBC Master versions, and allows coordinates to be scaled correctly on different platforms.
.SCALEY2 RTS \ Return from the subroutine