merge mapper code from FCEUX

[fceu.git] / mappers / 27.c

diff --git a/mappers/27.c b/mappers/27.c
index 4b5cd73..e1afc22 100644 (file)
--- a/mappers/27.c
+++ b/mappers/27.c
@@ -1,74 +1,69 @@
-#include "mapinc.h"
-
-static uint32 regchr[9];
-
-static DECLFW(Mapper27_write)
-{
- A&=0xF00F;
- int regnum;
- if((A>=0xB000) && (A<=0xE003)) {
-    regnum=((((A>>12)+1)&0x03)<<1)|((A&0x02)>>1);
-    if(A&1)
-       regchr[regnum]=(regchr[regnum]&0x0F)|(V<<4);
-    else
-       regchr[regnum]=(regchr[regnum]&0xFF0)|(V&0xF);
-    VROM_BANK1(regnum<<10,regchr[regnum]);
- }
- switch(A)
- {
-  case 0x8000: if(regchr[8]&2)
-                  ROM_BANK8(0xc000,V);
-               else
-                  ROM_BANK8(0x8000,V);
-               break;
-  case 0xA000: ROM_BANK8(0xa000,V); break;
-  case 0x9000:
-               switch(V&3){
-                  case 0:setmirror(MI_V);break;
-                  case 1:setmirror(MI_H);break;
-                  case 2:setmirror(MI_0);break;
-                  case 3:setmirror(MI_1);break;
-               }
-  case 0x9002: regchr[8]=V; break;
-  case 0xF000: //X6502_IRQEnd(FCEU_IQEXT);
-               IRQLatch=(IRQLatch&0xF0)|(V&0x0F);
-                           break;
-  case 0xF001: //X6502_IRQEnd(FCEU_IQEXT);
-               IRQLatch=(IRQLatch&0x0F)|((V&0xF)<<4);
-                           break;
-  case 0xF003: IRQa=((IRQa&0x1)<<1)|(IRQa&0x1);
-                           X6502_IRQEnd(FCEU_IQEXT);
-               break;
-  case 0xF002: IRQa=V&3;
-                           if(IRQa&0x02) IRQCount=IRQLatch;
-                           X6502_IRQEnd(FCEU_IQEXT);
-                           break;
- }
-// if((A&0xF000)==0xF000) FCEU_printf("$%04x:$%02x, %d\n",A,V, scanline);
-}
-
-static void Mapper27_hb(void)
-{
-//   FCEU_printf("%02x-%d,%d,%d\n",scanline,IRQa,IRQCount,IRQLatch);
-        if(IRQa&0x2){
-           if(IRQCount==0xFF){
-             X6502_IRQBegin(FCEU_IQEXT);
-              IRQCount=IRQLatch+1;
-         } else {
-           IRQCount++;
-           }
-        }
-}
-
-void Mapper27_init(void)
-{
-  int i;
-  for (i=0; i<9; i++) {
-    regchr[i]=0;
-  }
-  IRQa=0;
-  IRQCount=IRQLatch=0;
-  SetWriteHandler(0x8000,0xffff,Mapper27_write);
-  GameHBIRQHook=Mapper27_hb;
-}
-
+#include "mapinc.h"\r
+\r
+static uint32 regchr[9];\r
+\r
+static DECLFW(Mapper27_write)\r
+{\r
+ int regnum;\r
+ A&=0xF00F;\r
+ if((A>=0xB000) && (A<=0xE003)) {\r
+    regnum=((((A>>12)+1)&0x03)<<1)|((A&0x02)>>1);\r
+    if(A&1)\r
+       regchr[regnum]=(regchr[regnum]&0x00F)|(V<<4);\r
+    else\r
+       regchr[regnum]=(regchr[regnum]&0x1F0)|(V&0xF);\r
+    VROM_BANK1(regnum<<10,regchr[regnum]);\r
+ }\r
+ switch(A)\r
+ {\r
+  case 0x8000: ROM_BANK8(0x8000|((regchr[8]&2)<<13),V); break;\r
+  case 0xA000: ROM_BANK8(0xa000,V); break;\r
+  case 0x9000: switch(V&3){\r
+                  case 0:setmirror(MI_V);break;\r
+                  case 1:setmirror(MI_H);break;\r
+                  case 2:setmirror(MI_0);break;\r
+                  case 3:setmirror(MI_1);break;\r
+               }\r
+  case 0x9002: regchr[8]=V; break;\r
+  case 0xF000: //X6502_IRQEnd(FCEU_IQEXT);\r
+               IRQLatch=(IRQLatch&0xF0)|(V&0x0F);\r
+                           break;\r
+  case 0xF001: //X6502_IRQEnd(FCEU_IQEXT);\r
+               IRQLatch=(IRQLatch&0x0F)|((V&0xF)<<4);\r
+                           break;\r
+  case 0xF003: IRQa=((IRQa&0x1)<<1)|(IRQa&0x1);\r
+                           X6502_IRQEnd(FCEU_IQEXT);\r
+               break;\r
+  case 0xF002: IRQa=V&3;\r
+                           if(IRQa&0x02) IRQCount=IRQLatch-1;\r
+//                           X6502_IRQEnd(FCEU_IQEXT);\r
+                           break;\r
+ }\r
+// if((A&0xF000)==0xF000) FCEU_printf("$%04x:$%02x, %d\n",A,V, scanline);\r
+}\r
+\r
+static void Mapper27_hb(void)\r
+{\r
+//   FCEU_printf("%02x-%d,%d,%d\n",scanline,IRQa,IRQCount,IRQLatch);\r
+        if(IRQa&0x2){\r
+           if(IRQCount==0xFF){\r
+             X6502_IRQBegin(FCEU_IQEXT);\r
+              IRQCount=IRQLatch+1;\r
+         } else {\r
+           IRQCount++;\r
+           }\r
+        }\r
+}\r
+\r
+void Mapper27_init(void)\r
+{\r
+  int i;\r
+  for (i=0; i<9; i++) {\r
+    regchr[i]=0;\r
+  }\r
+  IRQa=0;\r
+  IRQCount=IRQLatch=0;\r
+  SetWriteHandler(0x8000,0xffff,Mapper27_write);\r
+  GameHBIRQHook=Mapper27_hb;\r
+}\r
+\r