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-rw-r--r--shared/apu.s8
1 files changed, 8 insertions, 0 deletions
diff --git a/shared/apu.s b/shared/apu.s
index 814c446..f876d91 100644
--- a/shared/apu.s
+++ b/shared/apu.s
@@ -1,7 +1,15 @@
.scope APU
m_square_1_envelope = $4000
+ m_square_1_sweep = $4001
m_square_1_low = $4002
m_square_1_high = $4003
+ m_square_2_envelope = $4004
+ m_square_2_sweep = $4005
+ m_square_2_low = $4006
+ m_square_2_high = $4007
+ m_triangle_control = $4008
+ m_triangle_low = $400A
+ m_triangle_high = $400B
m_dmc = $4010
m_status = $4015
m_frame_counter = $4017