add execute skeleton

diff --git a/Execute.v b/Execute.v
new file mode 100644 (file)
index 0000000..64999fa
--- /dev/null
+++ b/Execute.v
@@ -0,0 +1,23 @@
+module Execute(
+       input clk,
+       input Nrst,     /* XXX not used yet */
+       
+       input stall,
+       input flush,
+       
+       input inbubble,
+       input [31:0] pc,
+       input [31:0] insn,
+       input [31:0] cpsr,
+       input reg [31:0] op0,
+       input reg [31:0] op1,
+       input reg [31:0] op2,
+       input reg carry,
+       
+       output reg outstall = 0,
+       output reg outbubble = 1,
+       );
+
+       
+       
+endmodule

diff --git a/Issue.v b/Issue.v
index 2df5bfa5406613f7b8458962fb324fb9311fbeab..fcc2c0c8d6d64b60a758bd3bace800611b54cf61 100644 (file)
--- a/Issue.v
+++ b/Issue.v
@@ -5,7 +5,7 @@ module Issue(
        input Nrst,     /* XXX not used yet */
        
        input stall,    /* pipeline control */
        input Nrst,     /* XXX not used yet */
        
        input stall,    /* pipeline control */

-       input flush,
+       input flush,    /* XXX not used yet */

        
        input inbubble, /* stage inputs */
        input [31:0] insn,
        
        input inbubble, /* stage inputs */
        input [31:0] insn,