PICAXE Memory

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PICAXE Memory
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Three Types

• Program
• RAM
• Data

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Program Memory

• Stores the program as a series of commands
• Executed one command at a time
• Permanent, will remember for 10 years without
  power
• Accessed with the PICAXE Editor
• The program doesnt normally store data here

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Random Access Memory

• Divided into bytes (B0 to B27)
• Each byte is 8 bits wide
  (each stores up to 255)
• Can be accessed in different sizes
• Accessed by the program
• Battery operated, lose power lose data
• Used for math and to access the outside world

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Data

• 256 bytes of memory for storing data
• Each byte has an address, 0 - 255
• Permanent, will remember for ten years without
  power
• Accessed by the program

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Accessing RAM

• If B1 2
• B2 2
• B3 a
• READADC C.1,B4

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Accessing Data

• WRITE 12,200
• WRITE B0,201
• WRITE A,202
• READ 200,B0

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PICAXE Memory Map