Move macro defines out to files
[fpgaboy.git] / core / insn_incdec16.v
1 `define INSN_INCDEC16           9'b000xxx011
2
3 `ifdef EXECUTE
4         `INSN_INCDEC16: begin
5                 case (cycle)
6                 0:      case (opcode[5:4])
7                         `INSN_reg16_BC: {tmp,tmp2} <= `_BC;
8                         `INSN_reg16_DE: {tmp,tmp2} <= `_DE;
9                         `INSN_reg16_HL: {tmp,tmp2} <= `_HL;
10                         `INSN_reg16_SP: {tmp,tmp2} <= `_SP;
11                         endcase
12                 1:      begin
13                                 `EXEC_INC_PC
14                                 `EXEC_NEWCYCLE
15                         end
16                 endcase
17         end
18 `endif
19
20 `ifdef WRITEBACK
21         `INSN_INCDEC16: begin
22                 case (cycle)
23                 0:      {tmp,tmp2} <= {tmp,tmp2} +
24                                 (opcode[3] ? 16'hFFFF : 16'h0001);
25                 1:      case (opcode[5:4])
26                         `INSN_reg16_BC: `_BC <= {tmp,tmp2};
27                         `INSN_reg16_DE: `_DE <= {tmp,tmp2};
28                         `INSN_reg16_HL: `_HL <= {tmp,tmp2};
29                         `INSN_reg16_SP: `_SP <= {tmp,tmp2};
30                         endcase
31                 endcase
32         end
33 `endif
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