File size: 2,171 Bytes
78c261f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | module stack_control_tb();
reg [1:0] instr_type;
reg [4:0] opcode;
reg stop_bit;
reg [31:0] sp;
wire push;
wire pop;
wire [31:0] next_sp;
stack_control stack_control_0(
.instr_type(instr_type),
.opcode(opcode),
.stop_bit(stop_bit),
.push(push),
.pop(pop),
.sp(sp),
.next_sp(next_sp)
);
initial begin
instr_type = 2'b00;
opcode = 5'b00000; // AND
stop_bit = 0;
sp = 32'h00000008;
#10;
instr_type = 2'b00;
opcode = 5'b00001; // ADD
stop_bit = 0;
#10;
instr_type = 2'b00;
opcode = 5'b00010; // SUB
stop_bit = 0;
#10;
instr_type = 2'b00;
opcode = 5'b00011; // CMP
stop_bit = 1;
#10;
instr_type = 2'b01;
opcode = 5'b00000;// ANDI
stop_bit = 0;
#10;
instr_type = 2'b01;
opcode = 5'b00001; // ADDI
stop_bit = 0;
#10;
instr_type = 2'b01;
opcode = 5'b00010; // LW
stop_bit = 0;
#10;
instr_type = 2'b01;
opcode = 5'b00011; // SW
stop_bit = 0;
#10;
instr_type = 2'b01;
opcode = 5'b00100; // BEQ
stop_bit = 0;
#10;
instr_type = 2'b10;
opcode = 5'b00000; // J
stop_bit = 0;
#10;
instr_type = 2'b10;
opcode = 5'b00001; // JAL
stop_bit = 0;
#10;
instr_type = 2'b11;
opcode = 5'b00000; // SLL
stop_bit = 1;
#10;
instr_type = 2'b11;
opcode = 5'b00001; // SLR
stop_bit = 0;
#10;
instr_type = 2'b11;
opcode = 5'b00010; // SLLV
stop_bit = 1;
#10;
instr_type = 2'b11;
opcode = 5'b00011; // SLRV
stop_bit = 1;
#10;
#10 $finish;
end
initial begin
$monitor("instr_type = %b, opcode = %b, push = %b, pop = %b, sp = %h, next_sp = %h\n", instr_type, opcode, push, pop, sp, next_sp);
end
endmodule |