6                                 `INSN_reg_A:    wdata <= `_A;
 
   7                                 `INSN_reg_B:    wdata <= `_B;
 
   8                                 `INSN_reg_C:    wdata <= `_C;
 
   9                                 `INSN_reg_D:    wdata <= `_D;
 
  10                                 `INSN_reg_E:    wdata <= `_E;
 
  11                                 `INSN_reg_H:    wdata <= `_H;
 
  12                                 `INSN_reg_L:    wdata <= `_L;
 
  26         `INSN_LD_HL_reg: begin
 
  27                 /* Nothing of interest here */