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* HandyAudition Memory Map *
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$0000-$00FF: Zero Page
$0100-$01FF: Stack

$0200-$7FFF: Free

$8000-$9FFF: Engine/Calls

$A000-$A6AF: HandyMusic
$A6B0-$AFFF: Sound Effect Block
$B000-$BFFF: Music Data

$C000-$DFDF: Screen Buffer A
$DFE0-$DFFF: Free
$E000-$FFDF: Screen Buffer B
$FFE0-$FFFF: Free/IRQ Vectors