kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
161 wiersze
3.1 KiB
C++
161 wiersze
3.1 KiB
C++
#include <string.h>
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#include "emuapi.h"
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#include "iopins.h"
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extern "C" {
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#include "shared.h"
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}
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static int rom_offset = 0;
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static unsigned char * MemPool;
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extern "C" uint8 read_rom(int address) {
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return (MemPool[address+rom_offset]);
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}
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extern "C" void write_rom(int address, uint8 val) {
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MemPool[address]=val;
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}
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static int ik; // joypad key
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static int ihk; // I2C keyboard key
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static int iusbhk; // USB keyboard key
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static int prevhk; // previous keyboard key
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void emu_KeyboardOnDown(int keymodifer, int key) {
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int keyCode = -1; //INV_KEY;
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if ((key >=0xc0) && (key <=0xdf)) {
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keyCode = ((key-0xc0) & 0x1f) + 0x7f;
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}
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else {
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keyCode = key & 0x7f;
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}
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//Serial.println(keyCode);
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if (keyCode != -1) {
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iusbhk = keyCode;
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}
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}
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void emu_KeyboardOnUp(int keymodifer, int key) {
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iusbhk = 0;
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}
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void sms_Init(void)
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{
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emu_printf("Allocating MEM");
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MemPool = emu_SMalloc(8*1024*1024);
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mem_init();
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emu_printf("Allocating MEM done");
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}
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void sms_Input(int click) {
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ik = emu_GetPad();
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ihk = emu_ReadI2CKeyboard();
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}
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void sms_Start(char * filename)
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{
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emu_printf("load and init");
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int size = emu_FileSize(filename);
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int pos = 0;
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int n;
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int i;
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char * buf = (char*)cache;
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int f = emu_FileOpen(filename, "r+b");
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if (f) {
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while ( (n = emu_FileRead(buf,CACHE_SIZE,f) ) ) {
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for (int i=0; i<n; i++) {
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write_rom(pos++,buf[i]);
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}
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emu_printi(pos);
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//emu_printi(n);
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}
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emu_FileClose(f);
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}
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if((size / 512) & 1)
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{
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size -= 512;
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rom_offset += 512;
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}
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cart.pages = (size / 0x4000);
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int namelen = strlen(filename);
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emu_printf(&filename[namelen-4]);
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if (namelen > 4) {
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if ( (!strcmp(&filename[namelen-4],".sms")) || (!strcmp(&filename[namelen-4],".SMS")) ) {
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emu_printf("Master system");
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cart.type = TYPE_SMS;
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}
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else {
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emu_printf("Game Gear");
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cart.type = TYPE_GG;
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}
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}
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#ifdef HAS_SND
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system_init(22050);
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#else
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system_init(0);
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#endif
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emu_printf("init done");
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}
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void sms_Step(void)
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{
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input.pad[0]=0;
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int k = ik;
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int hk = ihk;
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if (iusbhk) hk = iusbhk;
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if (( k & MASK_JOY1_RIGHT) || ( k & MASK_JOY2_RIGHT)) {
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input.pad[0] |= INPUT_RIGHT;
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}
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if (( k & MASK_JOY1_LEFT) || ( k & MASK_JOY2_LEFT)) {
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input.pad[0] |= INPUT_LEFT;
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}
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if (( k & MASK_JOY1_UP) || ( k & MASK_JOY2_UP)) {
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input.pad[0] |= INPUT_UP;
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}
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if (( k & MASK_JOY1_DOWN) || ( k & MASK_JOY2_DOWN)) {
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input.pad[0] |= INPUT_DOWN;
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}
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if (( k & MASK_JOY1_BTN) || ( k & MASK_JOY2_BTN)) {
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input.pad[0] |= INPUT_BUTTON1;
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}
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if ( (k & MASK_KEY_USER2) || (hk == 'q') ) {
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input.pad[0] |= INPUT_BUTTON2;
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}
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if ( (k & MASK_KEY_USER1) || (hk == 'w') ) input.system |= (IS_GG) ? INPUT_START : INPUT_PAUSE;
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if (hk == 'r') input.system |= INPUT_HARD_RESET;
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//if (hk == 'e') input.system |= (IS_GG) ? INPUT_HARD_RESET : INPUT_SOFT_RESET;
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prevhk = hk;
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sms_frame(0);
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//emu_printi(emu_FrameSkip());
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emu_DrawVsync();
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}
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void SND_Process(void *stream, int len) {
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#ifdef HAS_SND
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audio_play_sample(stream, 0, len);
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#endif
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}
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