1 files changed, 19 insertions, 2 deletions
diff --git a/src/sim/cell/cell.rs b/src/sim/cell/cell.rs
index 2664721..c4b0a8f 100644
--- a/src/sim/cell/cell.rs
+++ b/src/sim/cell/cell.rs
@@ -9,6 +9,7 @@ pub struct Cell {
 
 impl Cell {
     const FLAG_PARITY: u8 = 0b0000_0001;
+    const FLAG_RB: u8 = 0b0000_0010;
 
     #[inline]
     pub fn parity(self) -> u8 {
@@ -20,8 +21,24 @@ impl Cell {
     }
     #[inline]
     pub fn match_parity(&mut self, seqno: u64) {
-        // TODO this will break with more flags
-        self.flags = (seqno as u8) & 0b1;
+        let parity = seqno % 2 != 0;
+        if parity {
+            self.flags |= Self::FLAG_PARITY;
+        } else {
+            self.flags = self.flags & !Self::FLAG_PARITY
+        }
+    }
+
+    #[inline]
+    pub fn rb(self) -> bool {
+        self.flags & Self::FLAG_RB == 1
+    }
+    pub fn set_rb(&mut self, rb: bool) {
+        if rb {
+            self.flags |= Self::FLAG_RB
+        } else {
+            self.flags = self.flags & !Self::FLAG_RB
+        }
     }
 }