mcd, fix pulldowns only there if cd attached

diff --git a/pico/memory.c b/pico/memory.c
index 72b7a90..fab46c2 100644 (file)
--- a/pico/memory.c
+++ b/pico/memory.c
@@ -116,13 +116,13 @@ void cpu68k_map_all_ram(int start_addr, int end_addr, void *ptr, int is_sub)
 static u32 m68k_unmapped_read8(u32 a)\r
 {\r
   elprintf(EL_UIO, "m68k unmapped r8  [%06x] @%06x", a, SekPc);\r
-  return 0; // assume pulldown, as if MegaCD2 was attached\r
+  return (PicoIn.AHW & PAHW_MCD) ? 0x00 : 0xff; // pulldown if MegaCD2 attached\r
 }\r
 \r
 static u32 m68k_unmapped_read16(u32 a)\r
 {\r
   elprintf(EL_UIO, "m68k unmapped r16 [%06x] @%06x", a, SekPc);\r
-  return 0;\r
+  return (PicoIn.AHW & PAHW_MCD) ? 0x00 : 0xffff;\r
 }\r
 \r
 static void m68k_unmapped_write8(u32 a, u32 d)\r