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SAP - 1

SAP - 1
Simple as Possible Computer
You can program the ROM to do simple operations like addition and subtraction. To run the program, set the clear input to ground. 
The ROM currently performs 5+11-6. 
Instruction OP-Code
  • LDA       -  0x
  • ADD      -  1x
  • Subtract - 2x
  • Output   -  ee
  • Halt        -  ff