X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=mappers%2F217.c;fp=mappers%2F217.c;h=6f7a2510341cd6f3957c903d65fae89f5977b218;hp=0000000000000000000000000000000000000000;hb=d97315ac0bca825d2d50a44453bc5652946e2c67;hpb=890e37ba2b8ea1c7593dc05926d7431e3bd00bfb

diff --git a/mappers/217.c b/mappers/217.c
new file mode 100644
index 0000000..6f7a251
--- /dev/null
+++ b/mappers/217.c
@@ -0,0 +1,96 @@
+/*
+#include "mapinc.h"
+
+static uint8 cmdin;
+static uint8 cmd;
+static uint8 regs[8];
+static uint8 master,chrm;
+
+static void DoPRG217(void)
+{
+ if(master&0x80)
+ {
+   setprg16(0x8000,master&0x1F);
+   setprg16(0xc000,master&0x1F);
+ }
+ else
+ {
+   setprg8(0x8000,regs[1]);
+   setprg8(0xA000,regs[3]);
+   setprg8(0xC000,~1);
+   setprg8(0xE000,~0);
+ }
+}
+
+static void DoCHR217(void)
+{
+ uint32 base=(cmd&0x80)<<5;
+ int orie=(chrm&0x4)<<6;
+
+ setchr2(0x0000^base,(orie|regs[0])>>1);
+ setchr2(0x0800^base,(orie|regs[7])>>1);
+
+ setchr1(0x1000,orie|regs[5]);
+ setchr1(0x1400,orie|regs[2]);
+ setchr1(0x1800,orie|regs[6]);
+ setchr1(0x1c00,orie|regs[4]);
+}
+
+static DECLFW(Write217_write)
+{
+// if(A==0x5000)
+// {
+//  master=V;
+//  DoPRG217();
+// }
+// else if(A==0x5001)
+// {
+//  chrm=V;
+//  DoCHR217();
+// }
+// else if(A==0x5007)
+// {
+// }
+
+ switch(A&0xE001)
+ {
+  case 0x4000:master=V;DoPRG217();break;
+  case 0x8000:IRQCount=V;break;
+  case 0xc001:break;
+  case 0xe000:X6502_IRQEnd(FCEU_IQEXT);break;
+  case 0xe001:break;
+  case 0xa001:setmirror((V&1)^1);break;
+  case 0x8001:cmd=V;cmdin=1;DoPRG217();DoCHR217();break;
+  case 0xa000:if(!cmdin) break;
+              regs[cmd&7]=V;
+              DoPRG217();
+              DoCHR217();
+              cmdin=0;
+              break;
+ }
+}
+
+static void hooko217(void)
+{
+ if(IRQCount)
+ {
+  IRQCount--;
+  if(!IRQCount)
+  {
+     X6502_IRQBegin(FCEU_IQEXT);
+  }
+ }
+}
+
+void Mapper217_init(void)
+{
+  int x;
+  for(x=0;x<8;x++) regs[x]=0;
+  master=chrm=cmd=cmdin=IRQCount=0;
+  GameHBIRQHook=hooko217;
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x5000,0xFFFF,Write217_write);
+  DoPRG217();
+  DoCHR217();
+}
+*/
\ No newline at end of file