add register offset to TNT_port addresses

1 files changed, 2 insertions, 2 deletions

diff --git a/gpib.c b/gpib.c
index 32e9074..598e25c 100644
--- a/gpib.c
+++ b/gpib.c
@@ -583,13 +583,13 @@ static unsigned long int TNT_DATA_COUNT()
 
 static void TNT_Out(int reg, unsigned int byte)
 {
-	bus_writebyte (TNT_Port, (uint8_t) byte);
+	bus_writebyte (TNT_Port + reg, (uint8_t) byte);
 }
 
 
 static unsigned char TNT_In(int reg)
 {
-	return (unsigned char) bus_readbyte (TNT_Port);
+	return (unsigned char) bus_readbyte (TNT_Port + reg);
 }