93 lines
1.7 KiB
C++
Executable File
93 lines
1.7 KiB
C++
Executable File
#include <../base.hpp>
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#define ST010_CPP
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namespace SNES {
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ST010 st010;
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#include "st010_data.hpp"
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#include "st010_op.cpp"
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int16 ST010::sin(int16 theta) {
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return sin_table[(theta >> 8) & 0xff];
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}
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int16 ST010::cos(int16 theta) {
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return sin_table[((theta + 0x4000) >> 8) & 0xff];
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}
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uint8 ST010::readb(uint16 addr) {
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return ram[addr & 0xfff];
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}
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uint16 ST010::readw(uint16 addr) {
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return (readb(addr + 0) << 0) |
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(readb(addr + 1) << 8);
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}
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uint32 ST010::readd(uint16 addr) {
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return (readb(addr + 0) << 0) |
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(readb(addr + 1) << 8) |
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(readb(addr + 2) << 16) |
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(readb(addr + 3) << 24);
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}
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void ST010::writeb(uint16 addr, uint8 data) {
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ram[addr & 0xfff] = data;
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}
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void ST010::writew(uint16 addr, uint16 data) {
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writeb(addr + 0, data);
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writeb(addr + 1, data >> 8);
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}
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void ST010::writed(uint16 addr, uint32 data) {
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writeb(addr + 0, data);
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writeb(addr + 1, data >> 8);
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writeb(addr + 2, data >> 16);
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writeb(addr + 3, data >> 24);
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}
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//
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void ST010::init() {
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}
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void ST010::enable() {
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}
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void ST010::power() {
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reset();
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}
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void ST010::reset() {
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memset(ram, 0x00, sizeof ram);
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}
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//
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uint8 ST010::read(unsigned addr) {
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return readb(addr);
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}
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void ST010::write(unsigned addr, uint8 data) {
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writeb(addr, data);
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if((addr & 0xfff) == 0x0021 && (data & 0x80)) {
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switch(ram[0x0020]) {
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case 0x01: op_01(); break;
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case 0x02: op_02(); break;
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case 0x03: op_03(); break;
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case 0x04: op_04(); break;
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case 0x05: op_05(); break;
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case 0x06: op_06(); break;
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case 0x07: op_07(); break;
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case 0x08: op_08(); break;
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}
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ram[0x0021] &= ~0x80;
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}
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}
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};
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