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@ -4,8 +4,8 @@ aliases:
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tags:
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tags:
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- cosc204
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- cosc204
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- lecture
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- lecture
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sr-due: 2022-08-03
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sr-due: 2022-08-23
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sr-interval: 8
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sr-interval: 20
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sr-ease: 250
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sr-ease: 250
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---
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---
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@ -16,7 +16,7 @@ sr-ease: 250
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- extended indirect `LDA [$31FE]` or `LDA [HERE]` points to a memory location which specifies another memory location
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- extended indirect `LDA [$31FE]` or `LDA [HERE]` points to a memory location which specifies another memory location
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- direct `LDA $ff` or `lda <HERE`
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- direct `LDA $ff` or `lda <HERE`
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- register `trf X,Y`
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- register `trf X,Y`
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- indexed `LDA $3111E, X` use memory location that is the sum of the operands
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- indexed `LDA $311E, X` use memory location that is the sum of the operands
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- `LDA ,X`
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- `LDA ,X`
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- `LDA $23,X`
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- `LDA $23,X`
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- etc
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- etc
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20
content/notes/6809-addressing-modes.md
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20
content/notes/6809-addressing-modes.md
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@ -0,0 +1,20 @@
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---
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title: "6809-addressing-modes"
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aliases:
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tags:
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- cosc204
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---
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name | example | description
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---------------------------------------------------
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implied |`inca `
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0immediate | `lda #$00`
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extended | `lda $31FE`
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extended indirect | `lda [$31FE]`
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direct | `lda $FF$` or `lda <HERE`
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register | `trf X,Y`
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indexed | `lda #311E, X` `sta 0,X`
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indexed relative | `lda [$10, X]`
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relative | `beq HERE`
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pr | `lda TABLE,PCR`
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@ -28,6 +28,7 @@ tags:
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- [CPU](notes/CPU.md)
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- [CPU](notes/CPU.md)
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- [ALU](notes/ALU.md)
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- [ALU](notes/ALU.md)
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- [computer-architecture](notes/computer-architecture.md)
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- [computer-architecture](notes/computer-architecture.md)
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- [6809-addressing-modes](notes/6809-addressing-modes.md)
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- Hardware
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- Hardware
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- Assembly
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- Assembly
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