main.c

#include "lib/stdio.h"
#include "timer.h"
#include "rom.h"
#include "mem.h"
#include "cpu.h"
#include "lcd.h"
#include "sdl.h"
#include "drv/input/keyboard.h"
#include "io/tty.h"
 
int gb_main(int argc, char *argv[]) {
    int r;
    const char usage[] = "Usage: %s <rom>\n";
 
    if(argc != 2) {
        printf(usage, argv[0]);
        return 0;
    }
 
    r = rom_load(argv[1]);
    if(!r)
        return 0;
    
    printf("ROM OK!\n");
 
    r = lcd_init();
    if(r)
        return 0;
    
    printf("LCD OK!\n");
 
    mem_init();
    printf("Mem OK!\n");
 
    cpu_init();
    printf("CPU OK!\n");
 
    keyboardctl(KEYBOARD_ECHO, false);
    set_cursor_enabled(false);
 
    r = 0;
 
    while(1)
    {
        int now;
 
        if(!cpu_cycle())
            break;
 
        now = cpu_get_cycles();
 
        while(now != r)
        {
            int i;
 
            for(i = 0; i < 4; i++)
                if(!lcd_cycle())
                    goto out;
 
            r++;
        }
 
        timer_cycle();
 
        r = now;
    }
out:
    sdl_quit();
 
    keyboardctl(KEYBOARD_ECHO, true);
    set_cursor_enabled(true);
 
    return 0;
}