// Example 1 - The Fetch Microcode
// example_1.ucode

// 1) Load program counter into MAR.
a: a_sel=7, b_sel=7, alu_sel=OR, mar_sel=LOAD;

// 2) Read in second half of instruction.
b: read, ir0_sel=LOAD;
c: if wait then goto b endif;

// 3) Increment Program Counter
d: a_sel=7, c_in, alu_sel=ADDA, result_sel=ALU, r7_write;

// 4) Load program counter into MAR.
e: a_sel=7, b_sel=7, alu_sel=OR, mar_sel=LOAD;

// 5) Read in first half of instruction.
f: read, ir1_sel=LOAD;
g: if wait then goto f endif;

// 6) Increment Program Counter
h: a_sel=7, c_in, alu_sel=ADDA, result_sel=ALU, r7_write;