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Add wires for ALU.
author
Joshua Wise
<joshua@rebirth.joshuawise.com>
Tue, 30 Dec 2008 05:58:36 +0000
(
00:58
-0500)
committer
Joshua Wise
<joshua@rebirth.joshuawise.com>
Tue, 30 Dec 2008 05:58:36 +0000
(
00:58
-0500)
Execute.v
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diff --git
a/Execute.v
b/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 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
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 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));
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(
endmodule
module Multiplier(
@@
-123,15
+135,15
@@
module ALU(
setres = 1'b1;
end
`ALU_ADC: begin
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
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
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
setres = 1'b1;
end
`ALU_TST: begin
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