114 lines
2.2 KiB
C++
Executable File
114 lines
2.2 KiB
C++
Executable File
#define CYCLE_ACCURATE
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#include "smp.hpp"
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#define SMP_CPP
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namespace SuperFamicom {
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#include "algorithms.cpp"
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#include "core.cpp"
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#include "memory.cpp"
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#include "timing.cpp"
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void SMP::synchronize_dsp() {
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while(dsp.clock < 0) dsp.enter();
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}
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void SMP::enter() {
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while(clock < 0 && sample_buffer < sample_buffer_end) op_step();
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}
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void SMP::render(int16_t * buffer, unsigned count)
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{
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while (count > 4096) {
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sample_buffer = buffer;
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sample_buffer_end = buffer + 4096;
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buffer += 4096;
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count -= 4096;
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clock -= 32 * 24 * 4096;
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enter();
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}
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sample_buffer = buffer;
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sample_buffer_end = buffer + count;
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clock -= 32 * 24 * count;
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enter();
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}
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void SMP::skip(unsigned count)
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{
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while (count > 4096) {
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sample_buffer = 0;
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sample_buffer_end = (const int16_t *) 4096;
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count -= 4096;
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clock -= 32 * 24 * 4096;
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enter();
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}
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sample_buffer = 0;
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sample_buffer_end = (const int16_t *) (intptr_t) count;
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clock -= 32 * 24 * count;
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enter();
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}
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void SMP::sample(int16_t left, int16_t right)
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{
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if ( sample_buffer >= (const int16_t *) (intptr_t) 4096 ) {
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if ( sample_buffer < sample_buffer_end ) *sample_buffer++ = left;
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if ( sample_buffer < sample_buffer_end ) *sample_buffer++ = right;
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}
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else if ( sample_buffer < sample_buffer_end ){
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sample_buffer += 2;
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}
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}
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void SMP::power() {
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timer0.target = 0;
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timer1.target = 0;
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timer2.target = 0;
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reset();
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dsp.power();
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}
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void SMP::reset() {
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for(unsigned n = 0x0000; n <= 0xffff; n++) apuram[n] = 0x00;
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opcode_number = 0;
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opcode_cycle = 0;
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regs.pc = 0xffc0;
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regs.sp = 0xef;
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regs.a = 0x00;
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regs.x = 0x00;
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regs.y = 0x00;
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regs.p = 0x02;
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//$00f1
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status.iplrom_enable = true;
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//$00f2
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status.dsp_addr = 0x00;
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//$00f8,$00f9
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status.ram00f8 = 0x00;
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status.ram00f9 = 0x00;
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//timers
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timer0.enable = timer1.enable = timer2.enable = false;
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timer0.stage1_ticks = timer1.stage1_ticks = timer2.stage1_ticks = 0;
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timer0.stage2_ticks = timer1.stage2_ticks = timer2.stage2_ticks = 0;
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timer0.stage3_ticks = timer1.stage3_ticks = timer2.stage3_ticks = 0;
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}
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SMP::SMP() : dsp( *this ), clock( 0 ) {
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apuram = new uint8_t[64 * 1024];
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for(auto& byte : iplrom) byte = 0;
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set_sfm_queue(0, 0);
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}
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SMP::~SMP() {
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delete [] apuram;
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}
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}
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