core/insn_rst.v

   1 `ifdef EXECUTE
   2         `INSN_RST: begin
   3                 case (cycle)
   4                 0:      `EXEC_INC_PC            // This goes FIRST in RST
   5                 1:      `EXEC_WRITE(`_SP - 1, `_PCH)
   6                 2:      `EXEC_WRITE(`_SP - 2, `_PCL)
   7                 3:      begin
   8                                 `EXEC_NEWCYCLE
   9                                 `_PC <= {10'b0,opcode[5:3],3'b0};
  10                         end
  11                 endcase
  12         end
  13 `endif
  14
  15 `ifdef WRITEBACK
  16         `INSN_RST: begin
  17                 case (cycle)
  18                 0:      begin /* type F */ end
  19                 1:      begin /* type F */ end
  20                 2:      begin /* type F */ end
  21                 3:      `_SP <= `_SP - 2;
  22                 endcase
  23         end
  24 `endif