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Emulate Sega Master System/Game Gear using SMSAdvance. #5

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Emulate Sega Master System/Game Gear using SMSAdvance. #5

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39 changes: 38 additions & 1 deletion source/ezkernel.c
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@

#include "goomba.h"
#include "pocketnes.h"
#include "smsadvance.h"



Expand Down Expand Up @@ -1323,6 +1324,12 @@ u32 IWRAM_CODE LoadEMU2PSRAM(TCHAR *filename,u32 is_EMU)
dmaCopy((void*)pReadCache,PSRAMBase_S98, pocketnes_gba_size);
rom_start_address = pocketnes_gba_size+0x30;
break;
case 4://sms
case 5://gg
dmaCopy((void*)smsadvance_gba,pReadCache, smsadvance_gba_size);
dmaCopy((void*)pReadCache,PSRAMBase_S98, smsadvance_gba_size);
rom_start_address = smsadvance_gba_size;
break;
default:
break;
}
Expand All @@ -1343,6 +1350,28 @@ u32 IWRAM_CODE LoadEMU2PSRAM(TCHAR *filename,u32 is_EMU)
dmaCopy((void*)pReadCache,PSRAMBase_S98 + 0x1EA0, 0x4);

}
else if(is_EMU==4 || is_EMU==5){//sms + gg
// Create a 64 byte SMSAdvance header.
int i;
for( i=0 ; i < 64 ; i++ ) {
pReadCache[i] = 0;
}

pReadCache[0] = 'S';
pReadCache[1] = 'M';
pReadCache[2] = 'S';
pReadCache[3] = 0x1A;
*(u32*)(&pReadCache[4]) = filesize;
strncpy((char*)(&pReadCache[32]), filename, 31);

if(is_EMU==5){
*(u16*)(&pReadCache[8]) |= 0x0004; // set gg rom flag
}

// write header directly after the SMSAdvance image, before the ROM.
dmaCopy((void*)pReadCache, PSRAMBase_S98 + rom_start_address, 64);
rom_start_address += 64;
}
else{
*(vu32*)pReadCache = 0x46c046c0;
dmaCopy((void*)pReadCache,PSRAMBase_S98 + 0x3AA0, 0x4); //exit no sram write
Expand Down Expand Up @@ -1520,6 +1549,14 @@ u32 Check_file_type(TCHAR *pfilename)
else if(!strcasecmp(&(pfilename[strlen8-3]), "nes"))
{
return 3;
}
else if(!strcasecmp(&(pfilename[strlen8-3]), "sms"))
{
return 4;
}
else if(!strcasecmp(&(pfilename[strlen8-2]), "gg"))
{
return 5;
}
else
{
Expand Down Expand Up @@ -2566,4 +2603,4 @@ int main(void) {
}
}
}
//---------------------------------------------------------------
//---------------------------------------------------------------
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