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Diffstat (limited to 'source/dsp1.c')
-rw-r--r--source/dsp1.c185
1 files changed, 46 insertions, 139 deletions
diff --git a/source/dsp1.c b/source/dsp1.c
index 6a7a6b6..e0ffa99 100644
--- a/source/dsp1.c
+++ b/source/dsp1.c
@@ -9,7 +9,7 @@
void (*SetDSP)(uint8_t, uint16_t) = &DSP1SetByte;
uint8_t(*GetDSP)(uint16_t) = &DSP1GetByte;
-void S9xResetDSP1()
+void S9xResetDSP1(void)
{
DSP1.waiting4command = true;
DSP1.in_count = 0;
@@ -155,7 +155,6 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
{
if (--DSP1.in_count == 0)
{
- // Actually execute the command
DSP1.waiting4command = true;
DSP1.out_index = 0;
switch (DSP1.command)
@@ -163,33 +162,27 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x1f:
DSP1.out_count = 2048;
break;
- case 0x00: // Multiple
+ case 0x00: // Multiple
Op00Multiplicand = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op00Multiplier = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
-
DSPOp00();
-
DSP1.out_count = 2;
DSP1.output [0] = Op00Result & 0xFF;
DSP1.output [1] = (Op00Result >> 8) & 0xFF;
break;
- case 0x20: // Multiple
+ case 0x20: // Multiple
Op20Multiplicand = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op20Multiplier = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
-
DSPOp20();
-
DSP1.out_count = 2;
DSP1.output [0] = Op20Result & 0xFF;
DSP1.output [1] = (Op20Result >> 8) & 0xFF;
break;
case 0x30:
- case 0x10: // Inverse
+ case 0x10: // Inverse
Op10Coefficient = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op10Exponent = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
-
DSPOp10();
-
DSP1.out_count = 4;
DSP1.output [0] = (uint8_t)(((int16_t) Op10CoefficientR) & 0xFF);
DSP1.output [1] = (uint8_t)((((int16_t) Op10CoefficientR) >> 8) & 0xFF);
@@ -197,74 +190,62 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [3] = (uint8_t)((((int16_t) Op10ExponentR) >> 8) & 0xff);
break;
case 0x24:
- case 0x04: // Sin and Cos of angle
+ case 0x04: // Sin and Cos of angle
Op04Angle = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op04Radius = (uint16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
-
DSPOp04();
-
DSP1.out_count = 4;
DSP1.output [0] = (uint8_t)(Op04Sin & 0xFF);
DSP1.output [1] = (uint8_t)((Op04Sin >> 8) & 0xFF);
DSP1.output [2] = (uint8_t)(Op04Cos & 0xFF);
DSP1.output [3] = (uint8_t)((Op04Cos >> 8) & 0xFF);
break;
- case 0x08: // Radius
+ case 0x08: // Radius
Op08X = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op08Y = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op08Z = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp08();
-
DSP1.out_count = 4;
DSP1.output [0] = (uint8_t)(((int16_t) Op08Ll) & 0xFF);
DSP1.output [1] = (uint8_t)((((int16_t) Op08Ll) >> 8) & 0xFF);
DSP1.output [2] = (uint8_t)(((int16_t) Op08Lh) & 0xFF);
DSP1.output [3] = (uint8_t)((((int16_t) Op08Lh) >> 8) & 0xFF);
break;
- case 0x18: // Range
+ case 0x18: // Range
Op18X = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op18Y = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op18Z = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op18R = (int16_t)(DSP1.parameters [6] | (DSP1.parameters[7] << 8));
-
DSPOp18();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op18D & 0xFF);
DSP1.output [1] = (uint8_t)((Op18D >> 8) & 0xFF);
break;
- case 0x38: // Range
+ case 0x38: // Range
Op38X = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op38Y = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op38Z = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op38R = (int16_t)(DSP1.parameters [6] | (DSP1.parameters[7] << 8));
-
DSPOp38();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op38D & 0xFF);
DSP1.output [1] = (uint8_t)((Op38D >> 8) & 0xFF);
break;
- case 0x28: // Distance (vector length)
+ case 0x28: // Distance (vector length)
Op28X = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op28Y = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op28Z = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp28();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op28R & 0xFF);
DSP1.output [1] = (uint8_t)((Op28R >> 8) & 0xFF);
break;
case 0x2c:
- case 0x0c: // Rotate (2D rotate)
+ case 0x0c: // Rotate (2D rotate)
Op0CA = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op0CX1 = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op0CY1 = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp0C();
-
DSP1.out_count = 4;
DSP1.output [0] = (uint8_t)(Op0CX2 & 0xFF);
DSP1.output [1] = (uint8_t)((Op0CX2 >> 8) & 0xFF);
@@ -272,17 +253,14 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [3] = (uint8_t)((Op0CY2 >> 8) & 0xFF);
break;
case 0x3c:
- case 0x1c: // Polar (3D rotate)
+ case 0x1c: // Polar (3D rotate)
Op1CZ = (DSP1.parameters [0] | (DSP1.parameters[1] << 8));
- //MK: reversed X and Y on neviksti and John's advice.
Op1CY = (DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op1CX = (DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op1CXBR = (DSP1.parameters [6] | (DSP1.parameters[7] << 8));
Op1CYBR = (DSP1.parameters [8] | (DSP1.parameters[9] << 8));
Op1CZBR = (DSP1.parameters [10] | (DSP1.parameters[11] << 8));
-
DSPOp1C();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op1CXAR & 0xFF);
DSP1.output [1] = (uint8_t)((Op1CXAR >> 8) & 0xFF);
@@ -294,7 +272,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x32:
case 0x22:
case 0x12:
- case 0x02: // Parameter (Projection)
+ case 0x02: // Parameter (Projection)
Op02FX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op02FY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op02FZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
@@ -302,9 +280,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op02LES = (int16_t)(DSP1.parameters [8] | (DSP1.parameters[9] << 8));
Op02AAS = (uint16_t)(DSP1.parameters [10] | (DSP1.parameters[11] << 8));
Op02AZS = (uint16_t)(DSP1.parameters [12] | (DSP1.parameters[13] << 8));
-
DSPOp02();
-
DSP1.out_count = 8;
DSP1.output [0] = (uint8_t)(Op02VOF & 0xFF);
DSP1.output [1] = (uint8_t)((Op02VOF >> 8) & 0xFF);
@@ -315,14 +291,12 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [6] = (uint8_t)(Op02CY & 0xFF);
DSP1.output [7] = (uint8_t)((Op02CY >> 8) & 0xFF);
break;
- case 0x3a: //1a Mirror
- case 0x2a: //1a Mirror
- case 0x1a: // Raster mode 7 matrix data
+ case 0x3a: //1a Mirror
+ case 0x2a: //1a Mirror
+ case 0x1a: // Raster mode 7 matrix data
case 0x0a:
Op0AVS = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
-
DSPOp0A();
-
DSP1.out_count = 8;
DSP1.output [0] = (uint8_t)(Op0AA & 0xFF);
DSP1.output [2] = (uint8_t)(Op0AB & 0xFF);
@@ -337,13 +311,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x16:
case 0x26:
case 0x36:
- case 0x06: // Project object
+ case 0x06: // Project object
Op06X = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op06Y = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op06Z = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp06();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op06H & 0xff);
DSP1.output [1] = (uint8_t)((Op06H >> 8) & 0xFF);
@@ -355,20 +327,17 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x1e:
case 0x2e:
case 0x3e:
- case 0x0e: // Target
+ case 0x0e: // Target
Op0EH = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op0EV = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
-
DSPOp0E();
-
DSP1.out_count = 4;
DSP1.output [0] = (uint8_t)(Op0EX & 0xFF);
DSP1.output [1] = (uint8_t)((Op0EX >> 8) & 0xFF);
DSP1.output [2] = (uint8_t)(Op0EY & 0xFF);
DSP1.output [3] = (uint8_t)((Op0EY >> 8) & 0xFF);
break;
- // Extra commands used by Pilot Wings
- case 0x05:
+ case 0x05: // Extra commands used by Pilot Wings
case 0x35:
case 0x31:
case 0x01: // Set attitude matrix A
@@ -376,37 +345,32 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op01Zr = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op01Yr = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op01Xr = (int16_t)(DSP1.parameters [6] | (DSP1.parameters[7] << 8));
-
DSPOp01();
break;
case 0x15:
- case 0x11: // Set attitude matrix B
+ case 0x11: // Set attitude matrix B
Op11m = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op11Zr = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op11Yr = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op11Xr = (int16_t)(DSP1.parameters [7] | (DSP1.parameters[7] << 8));
-
DSPOp11();
break;
case 0x25:
- case 0x21: // Set attitude matrix C
+ case 0x21: // Set attitude matrix C
Op21m = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op21Zr = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op21Yr = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
Op21Xr = (int16_t)(DSP1.parameters [6] | (DSP1.parameters[7] << 8));
-
DSPOp21();
break;
case 0x09:
case 0x39:
case 0x3d:
- case 0x0d: // Objective matrix A
+ case 0x0d: // Objective matrix A
Op0DX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op0DY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op0DZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp0D();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op0DF & 0xFF);
DSP1.output [1] = (uint8_t)((Op0DF >> 8) & 0xFF);
@@ -416,13 +380,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [5] = (uint8_t)((Op0DU >> 8) & 0xFF);
break;
case 0x19:
- case 0x1d: // Objective matrix B
+ case 0x1d: // Objective matrix B
Op1DX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op1DY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op1DZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp1D();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op1DF & 0xFF);
DSP1.output [1] = (uint8_t)((Op1DF >> 8) & 0xFF);
@@ -432,13 +394,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [5] = (uint8_t)((Op1DU >> 8) & 0xFF);
break;
case 0x29:
- case 0x2d: // Objective matrix C
+ case 0x2d: // Objective matrix C
Op2DX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op2DY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op2DZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp2D();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op2DF & 0xFF);
DSP1.output [1] = (uint8_t)((Op2DF >> 8) & 0xFF);
@@ -448,13 +408,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [5] = (uint8_t)((Op2DU >> 8) & 0xFF);
break;
case 0x33:
- case 0x03: // Subjective matrix A
+ case 0x03: // Subjective matrix A
Op03F = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op03L = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op03U = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp03();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op03X & 0xFF);
DSP1.output [1] = (uint8_t)((Op03X >> 8) & 0xFF);
@@ -463,13 +421,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [4] = (uint8_t)(Op03Z & 0xFF);
DSP1.output [5] = (uint8_t)((Op03Z >> 8) & 0xFF);
break;
- case 0x13: // Subjective matrix B
+ case 0x13: // Subjective matrix B
Op13F = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op13L = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op13U = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp13();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op13X & 0xFF);
DSP1.output [1] = (uint8_t)((Op13X >> 8) & 0xFF);
@@ -478,13 +434,11 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
DSP1.output [4] = (uint8_t)(Op13Z & 0xFF);
DSP1.output [5] = (uint8_t)((Op13Z >> 8) & 0xFF);
break;
- case 0x23: // Subjective matrix C
+ case 0x23: // Subjective matrix C
Op23F = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op23L = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op23U = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp23();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op23X & 0xFF);
DSP1.output [1] = (uint8_t)((Op23X >> 8) & 0xFF);
@@ -498,9 +452,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op0BX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op0BY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op0BZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp0B();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op0BS & 0xFF);
DSP1.output [1] = (uint8_t)((Op0BS >> 8) & 0xFF);
@@ -509,9 +461,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op1BX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op1BY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op1BZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp1B();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op1BS & 0xFF);
DSP1.output [1] = (uint8_t)((Op1BS >> 8) & 0xFF);
@@ -520,9 +470,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op2BX = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
Op2BY = (int16_t)(DSP1.parameters [2] | (DSP1.parameters[3] << 8));
Op2BZ = (int16_t)(DSP1.parameters [4] | (DSP1.parameters[5] << 8));
-
DSPOp2B();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op2BS & 0xFF);
DSP1.output [1] = (uint8_t)((Op2BS >> 8) & 0xFF);
@@ -535,9 +483,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
Op14U = (int16_t)(DSP1.parameters [6] | (DSP1.parameters[7] << 8));
Op14F = (int16_t)(DSP1.parameters [8] | (DSP1.parameters[9] << 8));
Op14L = (int16_t)(DSP1.parameters [10] | (DSP1.parameters[11] << 8));
-
DSPOp14();
-
DSP1.out_count = 6;
DSP1.output [0] = (uint8_t)(Op14Zrr & 0xFF);
DSP1.output [1] = (uint8_t)((Op14Zrr >> 8) & 0xFF);
@@ -549,9 +495,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x27:
case 0x2F:
Op2FUnknown = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
-
DSPOp2F();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op2FSize & 0xFF);
DSP1.output [1] = (uint8_t)((Op2FSize >> 8) & 0xFF);
@@ -559,9 +503,7 @@ void DSP1SetByte(uint8_t byte, uint16_t address)
case 0x07:
case 0x0F:
Op0FRamsize = (int16_t)(DSP1.parameters [0] | (DSP1.parameters[1] << 8));
-
DSPOp0F();
-
DSP1.out_count = 2;
DSP1.output [0] = (uint8_t)(Op0FPass & 0xFF);
DSP1.output [1] = (uint8_t)((Op0FPass >> 8) & 0xFF);
@@ -660,7 +602,6 @@ void DSP2SetByte(uint8_t byte, uint16_t address)
if (DSP1.in_count == DSP1.in_index)
{
- // Actually execute the command
DSP1.waiting4command = true;
DSP1.out_index = 0;
switch (DSP1.command)
@@ -670,7 +611,6 @@ void DSP2SetByte(uint8_t byte, uint16_t address)
{
DSP2Op0DHasLen = false;
DSP1.out_count = DSP2Op0DOutLen;
- //execute Op5
DSP2_Op0D();
}
else
@@ -689,7 +629,6 @@ void DSP2SetByte(uint8_t byte, uint16_t address)
{
DSP2Op06HasLen = false;
DSP1.out_count = DSP2Op06Len;
- //execute Op5
DSP2_Op06();
}
else
@@ -706,8 +645,7 @@ void DSP2SetByte(uint8_t byte, uint16_t address)
DSP1.out_count = 32;
DSP2_Op01();
break;
- case 0x09:
- // Multiply - don't yet know if this is signed or unsigned
+ case 0x09: // Multiply - don't yet know if this is signed or unsigned
DSP2Op09Word1 = DSP1.parameters[0] | (DSP1.parameters[1] << 8);
DSP2Op09Word2 = DSP1.parameters[2] | (DSP1.parameters[3] << 8);
DSP1.out_count = 4;
@@ -726,7 +664,6 @@ void DSP2SetByte(uint8_t byte, uint16_t address)
{
DSP2Op05HasLen = false;
DSP1.out_count = DSP2Op05Len;
- //execute Op5
DSP2_Op05();
}
else
@@ -792,9 +729,8 @@ bool DSP4_init = false;
void DSP4SetByte(uint8_t byte, uint16_t address)
{
- if (!DSP4_init)
+ if (!DSP4_init) // bootup
{
- // bootup
DSP4.waiting4command = 1;
DSP4_init = true;
}
@@ -871,76 +807,59 @@ void DSP4SetByte(uint8_t byte, uint16_t address)
if (!DSP4.waiting4command && DSP4.in_count == DSP4.in_index)
{
- // Actually execute the command
DSP4.waiting4command = true;
DSP4.out_index = 0;
DSP4.in_index = 0;
switch (DSP4.command)
{
- // 16-bit multiplication
- case 0x0000:
+ case 0x0000: // 16-bit multiplication
{
int16_t multiplier, multiplicand;
int32_t product;
-
multiplier = DSP4_READ_WORD(0);
multiplicand = DSP4_READ_WORD(2);
-
product = DSP4_Multiply(multiplicand, multiplier);
-
DSP4.out_count = 4;
DSP4_WRITE_WORD(0, product);
DSP4_WRITE_WORD(2, product >> 16);
break;
}
- // unknown: horizontal mapping command
- case 0x0011:
+ case 0x0011: // unknown: horizontal mapping command
{
int16_t a, b, c, d, m;
-
a = DSP4_READ_WORD(6);
b = DSP4_READ_WORD(4);
c = DSP4_READ_WORD(2);
d = DSP4_READ_WORD(0);
-
m = DSP4_UnknownOP11(a, b, c, d);
-
DSP4.out_count = 2;
DSP4_WRITE_WORD(0, m);
break;
}
- // track projection
- case 0x0001:
+ case 0x0001: // track projection
DSP4_Op01();
break;
- // track projection (pass 2)
- case 0x0007:
+ case 0x0007: // track projection (pass 2)
DSP4_Op07();
break;
- // zone projections (fuel/repair/lap/teleport/...)
- case 0x0008:
+ case 0x0008: // zone projections (fuel/repair/lap/teleport/...)
DSP4_Op08();
break;
- // sprite transformation
- case 0x0009:
+ case 0x0009: // sprite transformation
DSP4_Op09();
break;
- // fast track projection
- case 0x000D:
+ case 0x000D: // fast track projection
DSP4_Op0D();
break;
- // internal memory management (01)
- case 0x0003:
+ case 0x0003: // internal memory management (01)
{
// reset op09 data
op09_mode = false;
break;
}
- // internal memory management (06)
- case 0x0005:
+ case 0x0005: // internal memory management (06)
{
int32_t lcv;
-
// clear OAM tables
op06_index = 0;
op06_offset = 0;
@@ -948,49 +867,39 @@ void DSP4SetByte(uint8_t byte, uint16_t address)
op06_OAM[lcv] = 0;
break;
}
- // internal memory management (0D)
- case 0x000E:
+ case 0x000E: // internal memory management (0D)
{
// reset op09 data
op09_mode = true;
break;
}
- // sprite OAM post-table data
- case 0x0006:
+ case 0x0006: // sprite OAM post-table data
{
int32_t lcv;
-
DSP4.out_count = 32;
for (lcv = 0; lcv < 32; lcv++)
DSP4.output[lcv] = op06_OAM[lcv];
+ break;
}
- break;
- // unknown
- case 0x000A:
+ case 0x000A: // unknown
{
int16_t out1a, out2a;
-
out1a = (int16_t)0xff40;
out2a = (int16_t)0x00c0;
-
DSP4.out_count = 8;
-
DSP4_WRITE_WORD(0, out1a);
DSP4_WRITE_WORD(2, out2a);
DSP4_WRITE_WORD(4, out1a);
DSP4_WRITE_WORD(6, out2a);
+ break;
}
- break;
-
- // render player positions around track
- case 0x000B:
+ case 0x000B: // render player positions around track
{
int16_t sp_x = DSP4_READ_WORD(0);
int16_t sp_y = DSP4_READ_WORD(2);
int16_t oam = DSP4_READ_WORD(4);
- // Only allow 1p/1p-split to yield output (???)
- if (!op09_mode)
+ if (!op09_mode) // Only allow 1p/1p-split to yield output (???)
{
// yield OAM output
DSP4.out_count = 6;
@@ -1004,8 +913,7 @@ void DSP4SetByte(uint8_t byte, uint16_t address)
// OAM: size,msb data
DSP4_Op06(false, false);
}
- // 4p mode
- else
+ else // 4p mode
{
// no OAM available
DSP4.out_count = 0;
@@ -1023,8 +931,7 @@ void DSP4SetByte(uint8_t byte, uint16_t address)
uint8_t DSP4GetByte(uint16_t address)
{
uint8_t t;
- if ((address & 0xf000) == 0x6000 ||
- (address >= 0x8000 && address < 0xc000))
+ if ((address & 0xf000) == 0x6000 || (address >= 0x8000 && address < 0xc000))
{
if (DSP4.out_count)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 13:59:46 +0000