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--- base:use_shy_as_sty_abs_x [2017-11-16 01:25] – created cruzer
+++ base:use_shy_as_sty_abs_x [2017-11-16 01:26] – cruzer
@@ Line 14: / Line 14: @@
 </code>
-However, there's a little catch. The Y value is and'ed with the high byte of the address. And to make it even more consusing, it's actually the high byte + 1. So if you store it in $fe00, the value is and'ed with $ff, and therefore unaffected. But since you don't always use all the 8 bits, other addresses might work as well. E.g. if your values are C64 colors, which are between $00 and $0f, the upper 4 bits don't matter. So in that case all pages ending in $e will work, i.e. $0e00, $1e00, etc.
+However, there's a little catch. The Y value is and'ed with the high byte of the address. And to make it even more confusing, it's actually the high byte + 1. So if you store it in $fe00, the value is and'ed with $ff, and therefore unaffected. But since you don't always use all the 8 bits, other addresses might work as well. E.g. if your values are C64 colors, which are between $00 and $0f, the upper 4 bits don't matter. So in that case all pages ending in $e will work, i.e. $0e00, $1e00, etc.