User:Ddribin/APU Sandbox

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APU Register Overview

APU Registers
Address Name (Alt. Names?) Function
$4015 APUCR APUFLAGS APU Control Register
$4000 SQ1CR SQ1_ENV Square 1 Control Register
$4001 SQ1SW SQ1_ENV Square 1 Sweep
$4002 SQ1LL SQ1_LO Square 1 Length Low
$4003 SQ1LH SQ1_HI Square 1 Length High
$4004 SQ2CR Square 2 Control Register
$4008 TRICR Triangle Control Register
$400C NOICR Noise Control Register

APUCR: APU Control Register