Super Simple CPU - Logisim

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This is a super simple CPU design implemented in Logisim-evolution for study.

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To run the Super Simple CPU
Just install the current version of Logisim-evolution (I used v3.8.0)

Then open the simple_CPU1.circ file.

I recommend this Video as a quick way to get up to speed using Logisim

The .circ file includes a simple program that is in the ROM that counts by 2 and repeats.
```
0010 XXXX CLR     ;Clear
0001 0010 LDA 2   ;Load Accumulator with 2 and Add
1000 0100 JMPC 4  ;Jump if Carry set
0100 0001 JMP 1   ;Jump unconditional to location 1
0010 XXXX CLR     ;Clear
0001 1111 LDA F   ;Load Accumulator with F and Add
0100 0000 JMP 0   ;Jump unconditional to location 0
```
There is another program cylon.hex as another example

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