core/insn_ld_nn_sp.v

   1 `define INSN_LD_NN_SP           9'b000001000
   2
   3 `ifdef EXECUTE
   4         `INSN_LD_NN_SP: begin
   5                 case (cycle)
   6                 0:      begin
   7                                 `EXEC_INC_PC
   8                                 `EXEC_READ(`_PC + 16'h0001)
   9                         end
  10                 1:      begin
  11                                 `EXEC_INC_PC
  12                                 `EXEC_READ(`_PC + 16'h0001)
  13                         end
  14                 2:      begin
  15                                 `EXEC_WRITE(({rdata, tmp}), `_SPL)
  16                         end
  17                 3:      begin
  18                                 `EXEC_WRITE(({tmp, tmp2}), `_SPH)
  19                         end
  20                 4:      begin
  21                                 `EXEC_NEWCYCLE
  22                                 `EXEC_INC_PC
  23                         end
  24                 endcase
  25         end
  26 `endif
  27
  28 `ifdef WRITEBACK
  29         `INSN_LD_NN_SP: begin
  30                 case (cycle)
  31                 0:      begin end
  32                 1:      tmp <= rdata;
  33                 2:      {tmp, tmp2} <= {rdata, tmp} + 1;
  34                 3:      begin end
  35                 4:      begin end
  36                 endcase
  37         end
  38 `endif
  39