Add wires for ALU.
authorJoshua Wise <joshua@rebirth.joshuawise.com>
Tue, 30 Dec 2008 05:58:36 +0000 (00:58 -0500)
committerJoshua Wise <joshua@rebirth.joshuawise.com>
Tue, 30 Dec 2008 05:58:36 +0000 (00:58 -0500)
Execute.v

index 4865aa3..b1e9df5 100644 (file)
--- a/Execute.v
+++ b/Execute.v
@@ -16,6 +16,7 @@ module Execute(
        
        output reg outstall = 0,
        output reg outbubble = 1,
+       output reg [31:0] outcpsr = 0,
        output reg write_reg = 1'bx,
        output reg [3:0] write_num = 4'bxxxx,
        output reg [31:0] write_data = 32'hxxxxxxxx
@@ -26,10 +27,21 @@ module Execute(
        wire mult_done;
        wire [31:0] mult_result;
        
+       wire [31:0] alu_in0, alu_in1;
+       wire [3:0] alu_op;
+       wire alu_setflags, alu_set;
+       wire [31:0] alu_result, alu_outcpsr;
+       
        Multiplier multiplier(
                .clk(clk), .Nrst(Nrst),
                .start(mult_start), .acc0(mult_acc0), .in0(mult_in0),
                .in1(mult_in1), .done(mult_done), .result(mult_result));
+       
+       ALU alu(
+               .clk(clk), .Nrst(Nrst),
+               .in0(alu_in0), .in1(alu_in1), .cpsr(cpsr), .op(alu_op),
+               .setflags(alu_setflags), .shifter_carry(carry),
+               .result(alu_result), .cpsr_out(alu_outcpsr), .set(alu_set));
 endmodule
 
 module Multiplier(
@@ -123,15 +135,15 @@ module ALU(
                        setres = 1'b1;
                end
                `ALU_ADC: begin
-                       {flag_c, res} = sum + cpsr[`CPSR_C];
+                       {flag_c, res} = sum + {32'b0, cpsr[`CPSR_C]};
                        setres = 1'b1;
                end
                `ALU_SBC: begin
-                       {flag_c, res} = diff - (~cpsr[`CPSR_C]);
+                       {flag_c, res} = diff - {32'b0, (~cpsr[`CPSR_C])};
                        setres = 1'b1;
                end
                `ALU_RSC: begin
-                       {flag_c, res} = rdiff - (~cpsr[`CPSR_C]);
+                       {flag_c, res} = rdiff - {32'b0, (~cpsr[`CPSR_C])};
                        setres = 1'b1;
                end
                `ALU_TST: begin
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