Radica mapper added

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@482 be3aeb3a-fb24-0410-a615-afba39da0efa

diff --git a/Pico/Cart.c b/Pico/Cart.c
index 4de0fd4..a0d38a0 100644 (file)
--- a/Pico/Cart.c
+++ b/Pico/Cart.c
@@ -707,6 +707,12 @@ static void PicoCartDetect(void)
     carthw_realtec_startup();\r
   }\r
 \r
+  // Radica mapper\r
+  else if (name_cmp("KID CHAMELEON") == 0 && Pico.romsize > 0x100000)\r
+  {\r
+    carthw_radica_startup();\r
+  }\r
+\r
   // Some games malfunction if SRAM is not filled with 0xff\r
   if (name_cmp("DINO DINI'S SOCCER") == 0 ||\r
       name_cmp("MICRO MACHINES II") == 0)\r

diff --git a/Pico/carthw/carthw.c b/Pico/carthw/carthw.c
index eab13b8..eb71bbe 100644 (file)
--- a/Pico/carthw/carthw.c
+++ b/Pico/carthw/carthw.c
@@ -44,7 +44,7 @@ static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize)
        a &= 0x3f; a <<= 16;
        len = Pico.romsize - a;
        if (len <= 0) {
-               elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a);
+               elprintf(EL_ANOMALY|EL_STATUS, "12-in-1: missing bank @ %06x", a);
                return;
        }
 
@@ -132,7 +132,7 @@ static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
        }
 }
 
-void carthw_realtec_reset(void)
+static void carthw_realtec_reset(void)
 {
        int i;
        /* map boot code */
@@ -162,3 +162,64 @@ void carthw_realtec_startup(void)
        PicoResetHook = carthw_realtec_reset;
 }
 
+/* Radica mapper, based on DevSter's info
+ * http://devster.monkeeh.com/sega/radica/
+ */
+static unsigned int carthw_radica_baddr = 0;
+
+static carthw_state_chunk carthw_radica_state[] =
+{
+       { CHUNK_CARTHW, sizeof(carthw_radica_baddr), &carthw_radica_baddr },
+       { 0,            0,                           NULL }
+};
+
+static unsigned int carthw_radica_read16(unsigned int a, int realsize)
+{
+       if ((a & 0xffff80) != 0xa13000) {
+               elprintf(EL_UIO, "radica: r16 %06x", a);
+               return 0;
+       }
+
+       carthw_radica_baddr = a;
+       a = (a & 0x7e) << 15;
+       if (a >= Pico.romsize) {
+               elprintf(EL_ANOMALY|EL_STATUS, "radica: missing bank @ %06x", a);
+               return 0;
+       }
+       memcpy(Pico.rom, Pico.rom + Pico.romsize + a, Pico.romsize - a);
+
+       return 0;
+}
+
+static void carthw_radica_statef(void)
+{
+       carthw_radica_read16(carthw_radica_baddr, 0);
+}
+
+static void carthw_radica_reset(void)
+{
+       memcpy(Pico.rom, Pico.rom + Pico.romsize, Pico.romsize);
+}
+
+void carthw_radica_startup(void)
+{
+       void *tmp;
+
+       elprintf(EL_STATUS, "Radica mapper detected");
+
+       tmp = realloc(Pico.rom, Pico.romsize * 2);
+       if (tmp == NULL)
+       {
+               elprintf(EL_STATUS, "OOM");
+               return;
+       }
+       Pico.rom = tmp;
+       memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
+
+       PicoRead16Hook = carthw_radica_read16;
+       PicoResetHook  = carthw_radica_reset;
+       PicoLoadStateHook = carthw_radica_statef;
+       carthw_chunks     = carthw_radica_state;
+}
+
+

diff --git a/Pico/carthw/carthw.h b/Pico/carthw/carthw.h
index 29ec7b6..6813205 100644 (file)
--- a/Pico/carthw/carthw.h
+++ b/Pico/carthw/carthw.h
@@ -20,3 +20,4 @@ void PicoSVPWrite16(unsigned int a, unsigned int d, int realsize);
 /* misc */
 void carthw_12in1_startup(void);
 void carthw_realtec_startup(void);
+void carthw_radica_startup(void);