+#include <stdio.h>
+#include "z80.h"
+#include "vdp.h"
+#include "pad.h"
+#include "sprite.h"
+#include "parts.h"
+#include "debug.h"
+
+uint32_t frameno;
+uint32_t dbgval[4];
+
+struct part parts[3];
+static struct part *part;
+
+
int main(void)
{
+ int i;
+ static unsigned short bnprev;
+
+ z80_init();
+ vdp_init();
+ pad_init();
+ dbg_init();
+
+ dna_init();
+ mitosis_init();
+ simba_init();
+
+ parts[0].start = dna_start;
+ parts[0].update = dna_update;
+ parts[1].start = mitosis_start;
+ parts[1].update = mitosis_update;
+ parts[1].vblank = mitosis_vblank;
+ parts[2].start = simba_start;
+ parts[2].update = simba_update;
+ parts[2].vblank = simba_vblank;
+ part = parts;
+
+ part->start();
+
+ for(;;) {
+ unsigned char val;
+ z80_grab_bus();
+ while(!z80_have_bus());
+ val = Z80_MEM[0x1ffc];
+ dbgval[3] = (uint32_t)val << 8;
+ val = Z80_MEM[0x1ffd];
+ dbgval[3] |= val;
+ z80_release_bus();
+
+ dbg_setcursor(32, 0);
+ for(i=0; i<4; i++) {
+ printf("%04x\n", (unsigned int)dbgval[i]);
+ }
+ spr_begin();
+
+ part->update();
+
+ vdp_wait_vblank();
+ if(part->vblank) part->vblank();
+ spr_submit();
+ bnstate = pad_read(0);
+ bndiff = bnstate ^ bnprev;
+ bnprev = bnstate;
+
+ if(bndiff & bnstate & PAD_START) {
+ if(++part >= parts + 3) {
+ part = parts;
+ }
+ part->start();
+ }
+
+ frameno++;
+ }
+
return 0;
}