diff --git a/zsnes/src/chips/dsp1proc.asm b/zsnes/src/chips/dsp1proc.asm
index fc7bdf03..6eb88d05 100644
--- a/zsnes/src/chips/dsp1proc.asm
+++ b/zsnes/src/chips/dsp1proc.asm
@@ -22,6 +22,7 @@ EXTSYM DSPOp0A,Op0AA,Op0AB,Op0AC,Op0AD,Op0AVS,DSPOp10
 EXTSYM debstop
 EXTSYM DSPOp00,Op00Multiplicand,Op00Multiplier
 EXTSYM Op00Result
+;EXTSYM DSPOp10,Op10a,Op10b,Op10A,Op10B
 EXTSYM DSPOp04,Op04Angle,Op04Cos,Op04Radius,Op04Sin
 EXTSYM DSPOp28,Op28R,Op28X,Op28Y,Op28Z
 EXTSYM DSPOp0C,Op0CA,Op0CX1,Op0CX2,Op0CY1,Op0CY2
@@ -73,6 +74,7 @@ NEWSYM DSP1Read8b3F
     mov al,80h
     ret
 
+
 NEWSYM DSP1Read16b3F
     test ecx,8000h
     jnz .dsp1area
@@ -82,7 +84,7 @@ NEWSYM DSP1Read16b3F
     jae .doC000
     cmp byte[DSP1RLeft],0
     jne .movestuff
-    xor ax,ax
+    mov ax,0FFFFh
     ret
 .doC000
     mov ax,08000h
@@ -142,7 +144,7 @@ NEWSYM DSP1Read16b
     jae .do7000
     cmp byte[DSP1RLeft],0
     jne .movestuff
-    xor ax,ax
+    mov ax,0FFFFh
     ret
 .do7000
     mov ax,8000h
@@ -332,7 +334,6 @@ DSP1_00:  ; 16-bit multiply
 
 EXTSYM Op10Exponent, Op10ExponentR
 EXTSYM Op10Coefficient, Op10CoefficientR
-
 DSP1_10:  ; Inverse
     push eax
     mov ax,[DSP1VARS]
@@ -367,7 +368,6 @@ DSP1_04:  ; Trigonometric
     mov byte[DSP1RLeft],2
     pop eax
     ret
-
 DSP1_08:  ; Vector Size
     push eax
     mov ax,[DSP1VARS]
@@ -386,7 +386,6 @@ DSP1_08:  ; Vector Size
     mov byte[DSP1RLeft],2
     pop eax
     ret
-
 DSP1_18:  ; Vector Size Comparison
     push eax
     mov ax,[DSP1VARS]
@@ -424,6 +423,7 @@ DSP1_28:  ; Vector Absolute Value
     pop eax
     ret
 
+
 DSP1_0C:  ; Coordinate Rotation
     or byte[DSPDet],08h
     push eax
@@ -443,7 +443,6 @@ DSP1_0C:  ; Coordinate Rotation
     mov byte[DSP1RLeft],2
     pop eax
     ret
-
 DSP1_1C:  ; 3D Coordinate Rotation
     push eax
     mov ax,[DSP1VARS]
@@ -471,6 +470,7 @@ DSP1_1C:  ; 3D Coordinate Rotation
     pop eax
     ret
 
+
 DSP1_02:  ; Vector Size
     or byte[DSPDet],10h
     push eax
@@ -561,7 +561,6 @@ DSP1_0A:  ; Raster Data Calculation via DMA
     mov byte[DSP1RLeft],4
     pop eax
     ret
-
 DSP1_06:  ; Object Projection Calculation
     or byte[DSPDet],40h
     push eax
@@ -601,7 +600,6 @@ DSP1_06:  ; Object Projection Calculation
     mov [eax+11],bx
     pop ebx
     add dword[dsp1ptr],13
-
 DSP1_0E:  ; Coordinate Calculation of a point onscreen
     push eax
     mov ax,[DSP1VARS]
@@ -618,7 +616,6 @@ DSP1_0E:  ; Coordinate Calculation of a point onscreen
     mov byte[DSP1RLeft],2
     pop eax
     ret
-
 DSP1_01:  ; Set Attitude Matrix A
     push eax
     mov ax,[DSP1VARS]
@@ -634,7 +631,6 @@ DSP1_01:  ; Set Attitude Matrix A
     popad
     pop eax
     ret
-
 DSP1_11:  ; Set Attitude Matrix B
     push eax
     mov ax,[DSP1VARS]
@@ -650,7 +646,6 @@ DSP1_11:  ; Set Attitude Matrix B
     popad
     pop eax
     ret
-
 DSP1_21:  ; Set Attitude Matrix C
     push eax
     mov ax,[DSP1VARS]
@@ -666,7 +661,6 @@ DSP1_21:  ; Set Attitude Matrix C
     popad
     pop eax
     ret
-
 DSP1_0D:  ; Convert from global to object coords Matrix A
     push eax
     mov ax,[DSP1VARS]
@@ -687,7 +681,6 @@ DSP1_0D:  ; Convert from global to object coords Matrix A
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_1D:  ; Convert from global to object coords Matrix B
     push eax
     mov ax,[DSP1VARS]
@@ -708,7 +701,6 @@ DSP1_1D:  ; Convert from global to object coords Matrix B
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_2D:  ; Convert from global to object coords Matrix C
     push eax
     mov ax,[DSP1VARS]
@@ -729,7 +721,6 @@ DSP1_2D:  ; Convert from global to object coords Matrix C
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_03:  ; Convert from object to global coords Matrix A
     push eax
     mov ax,[DSP1VARS]
@@ -750,7 +741,6 @@ DSP1_03:  ; Convert from object to global coords Matrix A
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_13:  ; Convert from object to global coords Matrix B
     push eax
     mov ax,[DSP1VARS]
@@ -771,7 +761,6 @@ DSP1_13:  ; Convert from object to global coords Matrix B
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_23:  ; Convert from object to global coords Matrix C
     push eax
     mov ax,[DSP1VARS]
@@ -792,7 +781,6 @@ DSP1_23:  ; Convert from object to global coords Matrix C
     mov byte[DSP1RLeft],3
     pop eax
     ret
-
 DSP1_0B:  ; Calculation of inner product Matrix A
     push eax
     mov ax,[DSP1VARS]
@@ -809,7 +797,6 @@ DSP1_0B:  ; Calculation of inner product Matrix A
     mov byte[DSP1RLeft],1
     pop eax
     ret
-
 DSP1_1B:  ; Calculation of inner product Matrix B
     push eax
     mov ax,[DSP1VARS]
@@ -826,7 +813,6 @@ DSP1_1B:  ; Calculation of inner product Matrix B
     mov byte[DSP1RLeft],1
     pop eax
     ret
-
 DSP1_2B:  ; Calculation of inner product Matrix C
     push eax
     mov ax,[DSP1VARS]
@@ -843,7 +829,6 @@ DSP1_2B:  ; Calculation of inner product Matrix C
     mov byte[DSP1RLeft],1
     pop eax
     ret
-
 DSP1_14:  ; 3D angle rotation
     push eax
     mov ax,[DSP1VARS]