--- /dev/null
+/*
+#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();
+}
+*/
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