git.mutantstargoat.com Git - mdlife/blob - src/main.c

   1 #include <stdio.h>
   2 #include "z80.h"
   3 #include "vdp.h"
   4 #include "pad.h"
   5 #include "sprite.h"
   6 #include "parts.h"
   7 #include "debug.h"
   8
   9 uint32_t frameno;
  10 uint32_t dbgval[4];
  11
  12 struct part parts[2];
  13 static struct part *part;
  14
  15
  16 int main(void)
  17 {
  18         int i;
  19         static unsigned short bnprev;
  20
  21         z80_init();
  22         vdp_init();
  23         pad_init();
  24         dbg_init();
  25
  26         dna_init();
  27         simba_init();
  28
  29         parts[0].start = dna_start;
  30         parts[0].update = dna_update;
  31         parts[1].start = simba_start;
  32         parts[1].update = simba_update;
  33         parts[1].vblank = simba_vblank;
  34         part = parts;
  35
  36         part->start();
  37
  38         for(;;) {
  39                 unsigned char val;
  40                 z80_grab_bus();
  41                 while(!z80_have_bus());
  42                 val = Z80_MEM[0x1ffc];
  43                 dbgval[3] = (uint32_t)val << 8;
  44                 val = Z80_MEM[0x1ffd];
  45                 dbgval[3] |= val;
  46                 z80_release_bus();
  47
  48                 dbg_setcursor(32, 0);
  49                 for(i=0; i<4; i++) {
  50                         printf("%04x\n", (unsigned int)dbgval[i]);
  51                 }
  52                 spr_begin();
  53
  54                 part->update();
  55
  56                 vdp_wait_vblank();
  57                 if(part->vblank) part->vblank();
  58                 spr_submit();
  59                 bnstate = pad_read(0);
  60                 bndiff = bnstate ^ bnprev;
  61                 bnprev = bnstate;
  62
  63                 if(bndiff & bnstate & PAD_START) {
  64                         if(++part >= parts + 2) {
  65                                 part = parts;
  66                         }
  67                         part->start();
  68                 }
  69
  70                 frameno++;
  71         }
  72
  73         return 0;
  74 }