mirror of
https://github.com/wavemotion-dave/A5200DS.git
synced 2025-04-02 10:52:40 -04:00
6a0fd9e520
Ported frameskip for DS-LITE and DS-PHAT from XEGS-DS which renders most 5200 games playable on the older hardware!
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
#include <stdio.h>
|
|
#include <fat.h>
|
|
#include <nds.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include "main.h"
|
|
#include "intro.h"
|
|
#include "atari.h"
|
|
#include "a5200utils.h"
|
|
|
|
extern int bg0, bg1;
|
|
int bg0s, bg1s, bg2s, bg3s; // sub BG pointers
|
|
extern volatile u16 vusCptVBL; // VBL test
|
|
|
|
extern int load_os(char *filename );
|
|
|
|
void irqVBlank(void) {
|
|
// Manage time
|
|
vusCptVBL++;
|
|
}
|
|
|
|
extern int frame_skip;
|
|
// Program entry point
|
|
int main(int argc, char **argv)
|
|
{
|
|
char *bios_filename = "5200.rom";
|
|
// Init sound
|
|
consoleDemoInit();
|
|
soundEnable();
|
|
lcdMainOnTop();
|
|
|
|
frame_skip = (isDSiMode() ? FALSE:TRUE); // For older DS models, we skip frames to get full speed...
|
|
// Init Fat
|
|
if (!fatInitDefault()) {
|
|
iprintf("Unable to initialize libfat!\n");
|
|
return -1;
|
|
}
|
|
|
|
// Init Timer
|
|
dsInitTimer();
|
|
dsInstallSoundEmuFIFO();
|
|
|
|
if (keysCurrent() & KEY_R)
|
|
{
|
|
bios_filename = "XYZZY.~01"; // Won't be found... Altria bios instead...
|
|
}
|
|
// Intro and main screen
|
|
intro_logo();
|
|
dsInitScreenMain();
|
|
etatEmu = A5200_MENUINIT;
|
|
|
|
//
|
|
if (!load_os(bios_filename))
|
|
{
|
|
//load rom file via args if a rom path is supplied
|
|
if(argc > 1)
|
|
{
|
|
dsShowScreenMain();
|
|
dsLoadGame(argv[1]);
|
|
Atari800_Initialise();
|
|
etatEmu = A5200_PLAYINIT;
|
|
}
|
|
// Main loop of emulation
|
|
dsMainLoop();
|
|
}
|
|
else {
|
|
dsShowScreenMain();
|
|
dsPrintValue(0,0,0, "Can't find 5200.rom BIOS");
|
|
dsReadPad();
|
|
}
|
|
|
|
// Free memory to be correct
|
|
dsFreeEmu();
|
|
|
|
return(0);
|
|
}
|