diff --git a/Cargo.toml b/Cargo.toml
index aca97bc..6ded1b6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "holani"
-version = "0.6.3"
+version = "0.6.4"
 edition = "2021"
 
 [dependencies]
diff --git a/src/mikey/mod.rs b/src/mikey/mod.rs
index 0b409eb..29049ea 100644
--- a/src/mikey/mod.rs
+++ b/src/mikey/mod.rs
@@ -452,7 +452,7 @@ impl Mikey {
                 bus.set_status(BusStatus::PeekDone); 
             }
             MikeyInstruction::PokeSerCtl => {
-                self.registers.set_serctl(self.registers.data_r() as u8);
+                self.registers.set_serctl(&mut self.uart, self.registers.data_r() as u8);
                 self.registers.reset_ir();
                 trace!("< Poke");
                 bus.set_status(BusStatus::PokeDone); 
diff --git a/src/mikey/registers.rs b/src/mikey/registers.rs
index 9105bfa..9c1d392 100644
--- a/src/mikey/registers.rs
+++ b/src/mikey/registers.rs
@@ -188,12 +188,17 @@ impl MikeyRegisters {
         self.serctl_r.bits()
     }
 
-    pub fn set_serctl(&mut self, v: u8) {
+    pub fn set_serctl(&mut self, uart: &mut Uart, v: u8) {
+        let brk = self.serctl_w_is_flag_set(SerCtlW::tx_brk);
         self.serctl_w = match SerCtlW::from_bits(v) {
             Some(bits) => bits,
             None => SerCtlW::empty()
         };
 
+        if brk && !self.serctl_w_is_flag_set(SerCtlW::tx_brk) { //Set redeye to high if break has been disabled
+            uart.set_redeye_pin(uart::redeye_status::RedeyeStatus::High);
+        }
+
         if self.serctl_w_is_flag_set(SerCtlW::reset_err) {
             self.serctl_r_disable_flag(SerCtlR::par_err);
             self.serctl_r_disable_flag(SerCtlR::frame_err);
diff --git a/src/mikey/uart/mod.rs b/src/mikey/uart/mod.rs
index 176bfb6..da3b8da 100644
--- a/src/mikey/uart/mod.rs
+++ b/src/mikey/uart/mod.rs
@@ -94,7 +94,7 @@ impl Uart {
 
         if let Some(to_send) = self.transmit_register.pop() {
             self.set_redeye_pin(to_send);
-        }
+        } 
     }
 
     fn load_transmit_data(&mut self, mut data: u8, regs: &mut MikeyRegisters) {
@@ -152,16 +152,24 @@ impl Uart {
                 self.receive_register_len += 1;
             }
             9 => {                 
-                let par = bool_parity!(self.receive_register_buffer.count_ones() & 1 == 1);
-                if par == RedeyeStatus::High {
-                    regs.serctl_r_enable_flag(SerCtlR::par_bit);
-                } else {
-                    regs.serctl_r_disable_flag(SerCtlR::par_bit);
-                }
-                if par != redeye_status {
-                    trace!("Parity Error");
-                    regs.serctl_r_enable_flag(SerCtlR::par_err);
-                } 
+                match regs.serctl_w_is_flag_set(SerCtlW::par_en) {
+                    true => {
+                        let par = bool_parity!(self.receive_register_buffer.count_ones() & 1 == 1);
+                        if par == RedeyeStatus::High {
+                            regs.serctl_r_enable_flag(SerCtlR::par_bit);
+                        } else {
+                            regs.serctl_r_disable_flag(SerCtlR::par_bit);
+                        }
+                        if par != redeye_status {
+                            trace!("Parity Error");
+                            regs.serctl_r_enable_flag(SerCtlR::par_err);
+                        }
+                    }
+                    false => if redeye_status != bool_parity!(regs.serctl_w_is_flag_set(SerCtlW::par_even)) {
+                        trace!("Parity Error");
+                        regs.serctl_r_enable_flag(SerCtlR::par_err);
+                    }
+                }                 
                 self.receive_register_len += 1;
             }
             10 => {
@@ -201,7 +209,7 @@ impl Uart {
         regs.serctl_r_disable_flag(SerCtlR::tx_empty);
     }
 
-    fn set_redeye_pin(&mut self, status: RedeyeStatus) {
+    pub fn set_redeye_pin(&mut self, status: RedeyeStatus) {
         self.redeye_pin.set(status);
     }