diff --git a/notes b/notes
index ea3f7b6..9fed511 100644
--- a/notes
+++ b/notes
@@ -115,12 +115,16 @@ MBR_W        | | |###|
 MBR_BUF      | | |###|
 IR_W         | | |###|
 
+--
+In phase 0 we need to write PC to MAR via the A_BUS
+In phase 1 we need to increment PC and write the data at mem[MAR] to both MBR and IR
+Honestly since the opcode is just the opcode and nothing else we might be able to skip the MBR step here
 --
 
 Ph 0
 ----
 PC -> A_BUS     via  PC_BUF(l)
-A_BUS -> MEM_A  via  MAR_W(c)
+A_BUS -> MAR    via  MAR_W(c)
 
 Ph 1
 ----