Mast fireball partition table fix

diff --git a/filesys.cpp b/filesys.cpp
index 3019d7e0e3b1b055c9f6a1fb458846fd91d477e8..bbc555a9fc8db97184fbcd39f8ea3ff598c26367 100644 (file)
--- a/filesys.cpp
+++ b/filesys.cpp
@@ -8421,11 +8421,16 @@ static int pt_babe(TrapContext *ctx, uae_u8 *bufrdb, UnitInfo *uip, int unit_no,
 
        bad = rl(bufrdb + 4);
        if (bad) {
-               if (bad * hfd->ci.blocksize > FILESYS_MAX_BLOCKSIZE)
-                       return 0;
-               hdf_read_rdb(hfd, bufrdb2, bad * hfd->ci.blocksize, hfd->ci.blocksize, &error);
-               if (bufrdb2[0] != 0xBA || bufrdb2[1] != 0xD1)
-                       return 0;
+               if (bufrdb[0] == 0xba && bufrdb[1] == 0xbe) {
+                       if (bad * hfd->ci.blocksize > FILESYS_MAX_BLOCKSIZE)
+                               return 0;
+                       hdf_read_rdb(hfd, bufrdb2, bad * hfd->ci.blocksize, hfd->ci.blocksize, &error);
+                       if (bufrdb2[0] != 0xBA || bufrdb2[1] != 0xD1)
+                               return 0;
+               } else {
+                       // Only A2090 supports bad blocks. Fireball does not.
+                       bad = 0;
+               }
        }
 
        if (partnum > 0)