more menu work, scalers, sound

[fceu.git] / boards / subor.c

#include "mapinc.h"\r
\r
static uint8 mode;\r
static uint8 DRegs[4];\r
\r
static SFORMAT StateRegs[]=\r
{\r
 {DRegs, 4, "DREG"},\r
 {0}\r
};\r
\r
static void Sync(void)\r
{\r
 int base, bank;\r
 base = ((DRegs[0]^DRegs[1])&0x10)<<1;\r
 bank = (DRegs[2]^DRegs[3])&0x1f;\r
\r
 if(DRegs[1]&0x08)\r
 {\r
   bank &= 0xfe;\r
   if(mode==0)\r
   {\r
     setprg16(0x8000,base+bank+1);\r
     setprg16(0xC000,base+bank+0);\r
   }\r
   else\r
   {\r
     setprg16(0x8000,base+bank+0);\r
     setprg16(0xC000,base+bank+1);\r
   }\r
 }\r
 else\r
 {\r
   if(DRegs[1]&0x04)\r
   {\r
     setprg16(0x8000,0x1f);\r
     setprg16(0xC000,base+bank);\r
   }\r
   else\r
   {\r
     setprg16(0x8000,base+bank);\r
     if(mode==0)\r
        setprg16(0xC000,0x20);\r
     else\r
        setprg16(0xC000,0x07);\r
   }\r
 }\r
}\r
\r
static DECLFW(Mapper167_write)\r
{\r
 DRegs[(A>>13)&0x03]=V;\r
 Sync();\r
}\r
\r
static void StateRestore(int version)\r
{\r
 Sync();\r
}\r
\r
void Mapper166_init(void)\r
{\r
 mode=1;\r
 DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r
 Sync();\r
 SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r
 GameStateRestore=StateRestore;\r
 AddExState(&StateRegs, ~0, 0, 0);\r
}\r
\r
void Mapper167_init(void)\r
{\r
 mode=0;\r
 DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r
 Sync();\r
 SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r
 GameStateRestore=StateRestore;\r
 AddExState(&StateRegs, ~0, 0, 0);\r
}\r