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DSP-4 now usable, but still more fixes to come.

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This commit is contained in:
n-a-c-h
2005-02-26 18:45:21 +00:00
parent 532cd18665
commit b080385896
2 changed files with 26 additions and 9 deletions
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16
zsnes/src/chips/dsp4emu.c
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@@ -1175,11 +1175,13 @@ void DSP4_OP09()
int16 sp_dx, sp_dy;
int16 pixels;
bool8 draw = TRUE;
bool8 draw;
DSP4.in_count = 2;
DSP4_WAIT(5) resume5 :
draw = TRUE;
// opcode termination
raster = DSP4_READ_WORD();
if (raster == -0x8000)
@@ -1211,6 +1213,8 @@ void DSP4_OP09()
DSP4.in_count = 4;
DSP4_WAIT(6) resume6 :
draw = TRUE;
/////////////////////////////////////
// process tile data
@@ -2047,7 +2051,6 @@ void DSP4_OP11(int16 A, int16 B, int16 C, int16 D, int16 *M)
/////////////////////////////////////////////////////////////
//Processing Code
/////////////////////////////////////////////////////////////
uint8 dsp4_byte;
uint16 dsp4_address;
@@ -2060,7 +2063,7 @@ void InitDSP4()
void DSP4SetByte()
{
if ((dsp4_address & 0xf000) == 0x6000 || (dsp4_address >= 0x8000 && dsp4_address < 0xc000))
{
{
// clear pending read
if (DSP4.out_index < DSP4.out_count)
{
@@ -2138,7 +2141,6 @@ void DSP4SetByte()
DSP4.out_index = 0;
DSP4.in_index = 0;
printf("DSP4 Command: %u\n", DSP4.command);
switch (DSP4.command)
{
// 16-bit multiplication
@@ -2147,12 +2149,11 @@ void DSP4SetByte()
int16 multiplier, multiplicand;
int32 product;
multiplier = DSP4_READ_WORD();
multiplicand = DSP4_READ_WORD();
DSP4_Multiply(multiplicand, multiplier, &product);
DSP4_CLEAR_OUT();
DSP4_WRITE_WORD(product);
DSP4_WRITE_WORD(product >> 16);
@@ -2195,8 +2196,7 @@ void DSP4SetByte()
int16 in3a = DSP4_READ_WORD();
int16 out1a, out2a, out3a, out4a;
//DSP4_OP0A(in2a, &out2a, &out1a, &out4a, &out3a);
DSP4_OP0A(in2a, &out1a, &out2a, &out3a, &out4a);
DSP4_OP0A(in2a, &out2a, &out1a, &out4a, &out3a);
DSP4_CLEAR_OUT();
DSP4_WRITE_WORD(out1a);