+#include "../PicoInt.h"
+
+/* 12-in-1 */
+static unsigned int carthw_12in1_read16(unsigned int a, int realsize)
+{
+ // ??
+ elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc);
+ return 0;
+}
+
+static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize)
+{
+ int len;
+
+ if (a < 0xA13000 || a >= 0xA13040) {
+ elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
+ }
+
+ a &= 0x3f; a <<= 16;
+ len = Pico.romsize - a;
+ if (len <= 0) {
+ elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a);
+ return;
+ }
+
+ memcpy(Pico.rom, Pico.rom + 0x200000 + a, len);
+}
+
+static void carthw_12in1_reset(void)
+{
+ carthw_12in1_write8(0xA13000, 0, 0);
+}
+
+void carthw_12in1_startup(void)
+{
+ void *tmp;
+
+ elprintf(EL_STATUS, "12-in-1 mapper detected");
+
+ tmp = realloc(Pico.rom, 0x200000 + 0x200000);
+ if (tmp == NULL)
+ {
+ elprintf(EL_STATUS, "OOM");
+ return;
+ }
+ memcpy(Pico.rom + 0x200000, Pico.rom, 0x200000);
+
+ PicoRead16Hook = carthw_12in1_read16;
+ PicoWrite8Hook = carthw_12in1_write8;
+ PicoResetHook = carthw_12in1_reset;
+}
+