d37_sophiali_calculator

Continuous Math

Sophia Li 98-154 Intro to Open-Source Chip Design, Fall 2022

Description

Output is a total you can ADD, SUBTRACT, XOR, or LEFT_SHIFT with the input.

Uses a register and some combinational logic. There is a simple state machine so you must release the button for enable_arithmetic before enabling it again. Basically, the same operation won't happen every clock cycle 100k times a second.

Testing

Switch 6. after reset, the output should be zero. Hitting enable (Switch 5) will compute the current arithOp (+ = 2'b00, - = 2'b01, ^ = 2'b10, << = 2'b11

Inputs

• clock
• reset
• enable
• in_val[2]
• in_val[1]
• in_val[0]
• arithOp[1]
• arithOp[0]

Outputs

• LED[7]
• LED[6]
• LED[5]
• LED[4]
• LED[3]
• LED[2]
• LED[1]
• LED[0]