Implement LD r, $nn

2021-02-20 15:56:22 +00:00
parent 7327ecffb9
commit 67361093ec
5 changed files with 41 additions and 19 deletions
--- a/rtl/cpu/alu.sv
+++ b/rtl/cpu/alu.sv
@@ -44,7 +44,8 @@ module alu (
    `DEF_FF(f_r, f_next, f_we, '0);

    assign a_we   = alu_op_valid_i;
-    assign a_next = (alu_op_i == ALU_OP_XOR) ? a_xor :
+    assign a_next = (alu_op_i == ALU_OP_XOR) ? a_xor     :
+                    (alu_op_i == ALU_OP_NOP) ? operand_i :
                                               a_r;

    assign f_we   = alu_op_valid_i;