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-rw-r--r--z80_private.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/z80_private.h b/z80_private.h
index b052c04..2583766 100644
--- a/z80_private.h
+++ b/z80_private.h
@@ -118,6 +118,7 @@ extern Z80Byte Z80_MEMORY[];
#define B3_Z80 0x08
#define B5_Z80 0x20
+#define HIDDEN_Z80 (B3_Z80|B5_Z80)
#define SET(v,b) (v)|=b