git.joshuawise.com / fpgaboy.git / blame
| Commit | Line | Data |
|---|---|---|
| f2b745a7 JW |
1 | `ifdef EXECUTE |
| 2 | `INSN_INCDEC_reg8: begin | |
| 3 | `EXEC_INC_PC | |
| 4 | `EXEC_NEWCYCLE | |
| 5 | case (opcode[5:3]) | |
| 6 | `INSN_reg_A: tmp <= `_A; | |
| 7 | `INSN_reg_B: tmp <= `_B; | |
| 8 | `INSN_reg_C: tmp <= `_C; | |
| 9 | `INSN_reg_D: tmp <= `_D; | |
| 10 | `INSN_reg_E: tmp <= `_E; | |
| 11 | `INSN_reg_H: tmp <= `_H; | |
| 12 | `INSN_reg_L: tmp <= `_L; | |
| 13 | endcase | |
| 14 | end | |
| 15 | `endif | |
| 16 | ||
| 17 | `ifdef WRITEBACK | |
| 18 | `INSN_INCDEC_reg8: begin | |
| 19 | case (opcode[5:3]) | |
| 20 | `INSN_reg_A: `_A <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 21 | `INSN_reg_B: `_B <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 22 | `INSN_reg_C: `_C <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 23 | `INSN_reg_D: `_D <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 24 | `INSN_reg_E: `_E <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 25 | `INSN_reg_H: `_H <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 26 | `INSN_reg_L: `_L <= tmp + (opcode[0] ? 8'hFF : 8'h01); | |
| 27 | endcase | |
| a42afaa9 JW |
28 | `_F <= { |
| 29 | (tmp + (opcode[0] ? 8'hFF : 8'h01)) ? 1'b0 : 1'b1, | |
| 30 | 1'b0, | |
| 31 | (({1'b0,tmp[3:0]} + (opcode[0] ? 5'h1F : 5'h01)) >> 4) ? 1'b1 : 1'b0, | |
| 32 | `_F[4:0]}; | |
| f2b745a7 JW |
33 | end |
| 34 | `endif |