cleanups, savestates, input (combos), menu

[fceu.git] / mappers / 211.c

#include "mapinc.h"\r
\r
static uint8 mul[2];\r
static uint8 regie;\r
#define tkcom1 mapbyte1[1]\r
#define tkcom2 mapbyte1[2]\r
#define tkcom3 mapbyte1[3]\r
\r
#define prgb        mapbyte2\r
#define chr     mapbyte3\r
\r
static uint16 names[4];\r
static uint8  tekker;\r
\r
static DECLFR(tekread)\r
{\r
// FCEU_printf("READ READ READ: $%04x, $%04x, $%04x\n",A,X.PC,tekker);\r
 switch(A)\r
 {\r
  case 0x5000:return(tekker);\r
  case 0x5800:return(mul[0]*mul[1]);\r
  case 0x5801:return((mul[0]*mul[1])>>8);\r
  case 0x5803:return(regie);\r
  default:break;\r
 }\r
 return(X.DB);\r
}\r
\r
static void mira(void)\r
{\r
  int x;\r
  if(tkcom1&0x40)        // Name tables are ROM-only\r
  {\r
   for(x=0;x<4;x++)\r
    setntamem(CHRptr[0]+(((names[x])&CHRmask1[0])<<10), 0, x);\r
  }\r
  else                        // Name tables can be RAM or ROM.\r
  {\r
  for(x=0;x<4;x++)\r
  {\r
   if(((tkcom3&0x80)==(names[x]&0x80)))        // RAM selected.\r
    setntamem(NTARAM + ((names[x]&0x1)<<10),1,x);\r
   else\r
    setntamem(CHRptr[0]+(((names[x])&CHRmask1[0])<<10), 0, x);\r
  }\r
  }\r
}\r
\r
static void tekprom(void)\r
{\r
 switch(tkcom1&3)\r
  {\r
   case 1:              // 16 KB\r
          ROM_BANK16(0x8000,prgb[0]);\r
          ROM_BANK16(0xC000,prgb[2]);\r
          break;\r
\r
   case 2:              //2 = 8 KB ??\r
          ROM_BANK8(0x8000,prgb[0]);\r
          ROM_BANK8(0xa000,prgb[1]);\r
          ROM_BANK8(0xc000,prgb[2]);\r
          ROM_BANK8(0xe000,~0);\r
               break;\r
  }\r
}\r
\r
static void tekvrom(void)\r
{\r
 int x;\r
 switch(tkcom1&0x18)\r
  {\r
   case 0x00:      // 8KB\r
           setchr8(chr[0]);\r
               break;\r
   case 0x08:      // 4KB\r
          for(x=0;x<8;x+=4)\r
           setchr4(x<<10,chr[x]);\r
              break;\r
   case 0x10:      // 2KB\r
              for(x=0;x<8;x+=2)\r
           setchr2(x<<10,chr[x]);\r
              break;\r
   case 0x18:      // 1KB\r
              for(x=0;x<8;x++)\r
               setchr1(x<<10,chr[x]);\r
              break;\r
 }\r
}\r
\r
static DECLFW(Mapper211_write)\r
{\r
 if(A==0x5800) mul[0]=V;\r
 else if(A==0x5801) mul[1]=V;\r
 else if(A==0x5803) regie=V;\r
\r
 A&=0xF007;\r
 if(A>=0x8000 && A<=0x8003)\r
 {\r
  prgb[A&3]=V;\r
  tekprom();\r
 }\r
 else if(A>=0x9000 && A<=0x9007)\r
 {\r
  chr[A&7]=V;\r
  tekvrom();\r
 }\r
 else if(A>=0xb000 && A<=0xb007)\r
 {\r
   names[A&3]=V&3;\r
   mira();\r
 }\r
 else switch(A)\r
 {\r
   case 0xc002:IRQa=0;X6502_IRQEnd(FCEU_IQEXT);break;\r
   case 0xc003:\r
   case 0xc004:if(!IRQa) {IRQa=1;IRQCount=IRQLatch;} break;\r
   case 0xc005:IRQCount=IRQLatch=V;\r
               X6502_IRQEnd(FCEU_IQEXT);break;\r
   case 0xd000: tkcom1=V; mira(); break;\r
   case 0xd001: tkcom3=V; mira(); break;\r
 }\r
}\r
\r
static void Mapper211_hb(void)\r
{\r
 if(IRQCount) IRQCount--;\r
 if(!IRQCount)\r
 {\r
  if(IRQa) X6502_IRQBegin(FCEU_IQEXT);\r
  IRQa=0;\r
 }\r
}\r
static void togglie()\r
{\r
  tekker^=0xFF;\r
}\r
\r
void Mapper211_init(void)\r
{\r
  tekker=0xFF;\r
  MapperReset=togglie;\r
  SetWriteHandler(0x5000,0xffff,Mapper211_write);\r
  SetReadHandler(0x5000,0x5fff,tekread);\r
  GameHBIRQHook=Mapper211_hb;\r
}\r
\r