Implement RLA and POP RR

2022-02-08 23:53:02 +00:00
parent 4f892eb3f2
commit e713f8de87
9 changed files with 110 additions and 16 deletions
--- a/rtl/cpu/alu.sv
+++ b/rtl/cpu/alu.sv
@@ -59,7 +59,8 @@ module alu (
    assign a_next = (alu_op_valid_i & (alu_op_i == ALU_OP_XOR)) ? a_xor     :
                    (alu_op_valid_i & (alu_op_i == ALU_OP_NOP)) ? operand_i :
                    (alu_op_valid_i & (alu_op_i == ALU_OP_INC)) ? a_inc     :
-                                                                  a_r;
+                    (alu_op_valid_i & (alu_op_i == ALU_OP_ROT) & (rot_op_i == ROT_OP_RL)) ? out8_rl   :
+                                                                   a_r;

    assign f_we   = alu_op_valid_i | rot_op_valid_i;
    assign f_next = (alu_op_valid_i & (alu_op_i == ALU_OP_XOR))  ? f_xor  :