| Line 14... |
Line 14... |
// ALU
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// ALU
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output[31:0] alu_a_o, // ALU Operand A
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output[31:0] alu_a_o, // ALU Operand A
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output[31:0] alu_b_o, // ALU Operand B
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output[31:0] alu_b_o, // ALU Operand B
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output[4:0] alu_func_o, // ALU Function
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output[4:0] alu_func_o, // ALU Function
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output alu_signed_o, // ALU operation is Signed
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output alu_signed_o, // ALU operation is Signed
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input[31:0] alu_result_i, // ALU Result
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input[32:0] alu_result_i, // ALU Result with Carry
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input alu_carry_i, // ALU Carry
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// Multiplier
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// Multiplier
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output reg mul_req_o, // Multiplier Request
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output reg mul_req_o, // Multiplier Request
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output[31:0] mul_a_o, // Multiplier Operand A
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output[31:0] mul_a_o, // Multiplier Operand A
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output[31:0] mul_b_o, // Multiplier Operand B
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output[31:0] mul_b_o, // Multiplier Operand B
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| Line 90... |
Line 89... |
// Latch 3: EX/MEM
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// Latch 3: EX/MEM
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reg[31:0] ex_mem_opcode;
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reg[31:0] ex_mem_opcode;
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reg[31:0] ex_mem_addr, ex_mem_addrnext;
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reg[31:0] ex_mem_addr, ex_mem_addrnext;
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reg[31:0] ex_mem_addrbranch, ex_mem_addrjump, ex_mem_addrjr;
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reg[31:0] ex_mem_addrbranch, ex_mem_addrjump, ex_mem_addrjr;
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reg[63:0] ex_mem_aluout; // ALU result
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reg[63:0] ex_mem_aluout; // ALU result
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reg ex_mem_carry; // ALU carry
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reg ex_mem_branch, ex_mem_jump, ex_mem_jr, ex_mem_linked;
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reg ex_mem_branch, ex_mem_jump, ex_mem_jr, ex_mem_linked;
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reg ex_mem_mult, ex_mem_div;
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reg ex_mem_mult, ex_mem_div;
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reg ex_mem_load,ex_mem_store;
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reg ex_mem_load,ex_mem_store;
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reg[31:0] ex_mem_store_value;
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reg[31:0] ex_mem_store_value;
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reg[3:0] ex_mem_store_sel; // Byte Selector on Stores
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reg[3:0] ex_mem_store_sel; // Byte Selector on Stores
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| Line 1764... |
Line 1764... |
ex_mem_destlo <= id_ex_destlo;
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ex_mem_destlo <= id_ex_destlo;
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// Choose the output from ALU, Multiplier or Divider
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// Choose the output from ALU, Multiplier or Divider
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if(id_ex_mult) ex_mem_aluout <= mul_product_i;
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if(id_ex_mult) ex_mem_aluout <= mul_product_i;
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else if(id_ex_div) ex_mem_aluout <= { div_remainder_i, div_quotient_i };
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else if(id_ex_div) ex_mem_aluout <= { div_remainder_i, div_quotient_i };
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else ex_mem_aluout <= alu_result_i;
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else begin
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ex_mem_aluout <= {32'b0, alu_result_i[31:0]};
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ex_mem_carry <= alu_result_i[32];
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end
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if(id_ex_store) begin
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if(id_ex_store) begin
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$display("INFO: CPU(%m)-EX: Execution of Store instruction @ADDR=%X w/OPCODE=%X started to STORE_ADDR=%X w/STORE_DATA=%X", id_ex_addr, id_ex_opcode, alu_result_i, id_ex_store_value);
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$display("INFO: CPU(%m)-EX: Execution of Store instruction @ADDR=%X w/OPCODE=%X started to STORE_ADDR=%X w/STORE_DATA=%X", id_ex_addr, id_ex_opcode, alu_result_i, id_ex_store_value);
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case(id_ex_size)
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case(id_ex_size)
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