Opcode Format Mnemonic Description
10011SSS STORE The STORE mnemonic is used to store a 8-bit long value from a General Purpose Register in the SRAM memory. The 16-bit long memory address is taken from the M Register.


Bits Description
SSS Source Register.

  • 000: D Register
  • 001: E Register
  • 010: F Register
  • 011: G Register
  • 100: H Register
  • 101: Not used...
  • 110: XL Register
  • 111: XH Register

The following animation shows how the STORE opcode is executed physically on the CPU.

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