Bugfix z80_addrbus_set_tristate()

diff --git a/avr/z80-if.c b/avr/z80-if.c
index 21ffeac87e054da19880689744560ae12628a514..c49d2146c9e63b058ccb5a2d63ec7b4e4ba4cfd2 100644 (file)
--- a/avr/z80-if.c
+++ b/avr/z80-if.c
@@ -168,7 +168,7 @@ static void z80_addrbus_set_tristate(void)
        DDR_ADL = 0;
        P_ADH = 0;
        DDR_ADH = 0;
-       PIN_ADB = P_ADB & ~(MASK(ADB_WIDTH) << ADB_SHIFT);
+       PIN_ADB = P_ADB & (MASK(ADB_WIDTH) << ADB_SHIFT);
        DDR_ADB = DDR_ADB & ~(MASK(ADB_WIDTH) << ADB_SHIFT);
 }