diff --git a/content/notes/03-sequential-logic-circuits.md b/content/notes/03-sequential-logic-circuits.md
index f45a5832f..f1d189ae2 100644
--- a/content/notes/03-sequential-logic-circuits.md
+++ b/content/notes/03-sequential-logic-circuits.md
@@ -4,8 +4,8 @@ aliases:
 tags: 
 - cosc204
 - lecture
-sr-due: 2022-08-03
-sr-interval: 8
+sr-due: 2022-08-23
+sr-interval: 20
 sr-ease: 250
 ---
 
diff --git a/content/notes/07-6809-advanced.md b/content/notes/07-6809-advanced.md
index 1770e5065..8ad4a1011 100644
--- a/content/notes/07-6809-advanced.md
+++ b/content/notes/07-6809-advanced.md
@@ -16,7 +16,7 @@ sr-ease: 250
 - extended indirect `LDA [$31FE]` or `LDA [HERE]` points to a memory location which specifies another memory location
 - direct `LDA $ff` or `lda <HERE`
 - register `trf X,Y`
-- indexed `LDA $3111E, X` use memory location that is the sum of the operands
+- indexed `LDA $311E, X` use memory location that is the sum of the operands
 	- `LDA ,X`
 	- `LDA $23,X`
 	- etc
diff --git a/content/notes/6809-addressing-modes.md b/content/notes/6809-addressing-modes.md
new file mode 100644
index 000000000..7d297f33e
--- /dev/null
+++ b/content/notes/6809-addressing-modes.md
@@ -0,0 +1,20 @@
+---
+title: "6809-addressing-modes"
+aliases: 
+tags: 
+- cosc204
+---
+
+
+name | example | description
+---------------------------------------------------
+implied |`inca `
+0immediate  | `lda  #$00`
+extended  | `lda $31FE`
+extended indirect  | `lda [$31FE]`
+direct  | `lda $FF$` or `lda <HERE`
+register  | `trf X,Y`
+indexed  | `lda #311E, X` `sta 0,X`
+indexed relative  | `lda [$10, X]`
+relative  | `beq HERE`
+pr  | `lda TABLE,PCR`
\ No newline at end of file
diff --git a/content/notes/cosc-204.md b/content/notes/cosc-204.md
index 01553ccf1..0961ae41a 100644
--- a/content/notes/cosc-204.md
+++ b/content/notes/cosc-204.md
@@ -28,6 +28,7 @@ tags:
 - [CPU](notes/CPU.md)
 - [ALU](notes/ALU.md)
 - [computer-architecture](notes/computer-architecture.md)
+- [6809-addressing-modes](notes/6809-addressing-modes.md)
 
 - Hardware
 - Assembly