libretro: initialize blank memory card

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 180c1d7..6212980 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -41,6 +41,39 @@ int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
 int in_keystate;
 int in_enable_vibration;
 
+static void init_memcard(char *mcd_data)
+{
+       unsigned off = 0;
+       unsigned i;
+
+       memset(mcd_data, 0, MCD_SIZE);
+
+       mcd_data[off++] = 'M';
+       mcd_data[off++] = 'C';
+       off += 0x7d;
+       mcd_data[off++] = 0x0e;
+
+       for (i = 0; i < 15; i++) {
+               mcd_data[off++] = 0xa0;
+               off += 0x07;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x75;
+               mcd_data[off++] = 0xa0;
+       }
+
+       for (i = 0; i < 20; i++) {
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x04;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x76;
+       }
+}
+
 static int vout_open(void)
 {
        return 0;
@@ -402,6 +435,7 @@ void retro_init(void)
 
        McdDisable[0] = 0;
        McdDisable[1] = 1;
+       init_memcard(Mcd1Data);
 }
 
 void retro_deinit(void)