TO-DO: [.] fix overflow flag in datapath.v
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debug MOV error in autograder
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stage 1: execute instructions from memory
- lab7_top.v
- 4 new states in FSM
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stage 2: use memory to store data and instructions
- 2 new instructions: LDR & STR
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stage 3: load/ store using De1-SoC
- design 2 CL circuits: 1 for LDR input, 1 for STR output