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Made frequency table lookups work across 256 byte boundaries #1

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merged 1 commit into from
Mar 1, 2022
+48 −45
Merged

Made frequency table lookups work across 256 byte boundaries #1

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93 changes: 48 additions & 45 deletions Source/mGBASMSynthFunctions.s
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Original file line number Diff line number Diff line change
Expand Up @@ -60,12 +60,13 @@ _asmUpdatePu1PbWheelReset$::
ld A,(hl)
ld B,A

ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
ld A,B
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)
ld (#0xFF13),A
Expand Down Expand Up @@ -144,15 +145,13 @@ _asmUpdatePu2PbWheelReset$::

ld hl, #_noteStatus + 3
ld A,(hl)
ld B,A


ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)
ld (#0xFF18),A
Expand Down Expand Up @@ -254,14 +253,13 @@ _asmUpdateWavPbWheelReset$::

ld hl, #_noteStatus + 5
ld A,(hl)
ld B,A

ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)

Expand Down Expand Up @@ -340,9 +338,10 @@ _asmUpdateNoiPbWheelReset$::
ld B,A

ld A,#<_noiFreq
add A,B
add A,B
ld E,A
ld A,#>_noiFreq
adc A,#>_noiFreq
sub E
ld D,A

ld A,(DE)
Expand Down Expand Up @@ -380,7 +379,7 @@ _asmPlayNotePu1::

cp #0x00
jr nz,_asmPlayNotePu1OnSet$
jr _asmPlayNotePu1Off$
jp _asmPlayNotePu1Off$

_asmPlayNotePu1OnSet$::
ld A, (#0xFF12)
Expand Down Expand Up @@ -426,12 +425,13 @@ _asmPlayNotePu1On$::
ld hl, #_noteStatus + 1
ld (hl),B

ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
ld A,B
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)
ld (#0xFF13),A
Expand Down Expand Up @@ -522,7 +522,7 @@ _asmPlayNotePu2$::

cp #0x00
jr nz,_asmPlayNotePu2OnSet$
jr _asmPlayNotePu2Off$
jp _asmPlayNotePu2Off$

_asmPlayNotePu2OnSet$::
ld A, (#0xFF17)
Expand Down Expand Up @@ -566,12 +566,13 @@ _asmPlayNotePu2On$::
ld hl, #_noteStatus + 3
ld (hl),B

ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
ld A,B
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)
ld (#0xFF18),A
Expand Down Expand Up @@ -689,12 +690,13 @@ pop bc
ret

_asmPlayNoteWavSet$::
ld A,#<_freq
add A,B
add A,B
ld E,A
ld A,#>_freq
ld D,A
ld A,B
add A,A
add A,#<_freq
ld E,A
adc #>_freq
sub E
ld D,A

ld A,(DE)

Expand Down Expand Up @@ -819,9 +821,10 @@ _asmPlayNoteNoiOn$::
ld (#0xFF21),A

ld A,#<_noiFreq
add A,B
add A,B
ld E,A
ld A,#>_noiFreq
adc A,#>_noiFreq
sub E
ld D,A

ld A,(DE)
Expand Down