core/insn_ld_reg_imm16.v

   1 `define INSN_LD_reg_imm16       9'b000xx0001
   2
   3 `ifdef EXECUTE
   4         `INSN_LD_reg_imm16: begin
   5                 `EXEC_INC_PC
   6                 case (cycle)
   7                 0:      `EXEC_READ(`_PC + 1)
   8                 1:      `EXEC_READ(`_PC + 1)
   9                 2:      `EXEC_NEWCYCLE
  10                 endcase
  11         end
  12 `endif
  13
  14 `ifdef WRITEBACK
  15         `INSN_LD_reg_imm16: begin
  16                 case (cycle)
  17                 0:      begin /* */ end
  18                 1:      begin
  19                                 case (opcode[5:4])
  20                                 `INSN_reg16_BC: `_C <= rdata;
  21                                 `INSN_reg16_DE: `_E <= rdata;
  22                                 `INSN_reg16_HL: `_L <= rdata;
  23                                 `INSN_reg16_SP: `_SPL <= rdata;
  24                                 endcase
  25                         end
  26                 2:      begin
  27                                 case (opcode[5:4])
  28                                 `INSN_reg16_BC: `_B <= rdata;
  29                                 `INSN_reg16_DE: `_D <= rdata;
  30                                 `INSN_reg16_HL: `_H <= rdata;
  31                                 `INSN_reg16_SP: `_SPH <= rdata;
  32                                 endcase
  33                         end
  34                 endcase
  35         end
  36 `endif