`ifdef EXECUTE `INSN_PUSH_reg: begin /* PUSH is 16 cycles! */ case (cycle) 0: case (opcode[5:4]) `INSN_stack_AF: `EXEC_WRITE(`_SP - 1, `_A) `INSN_stack_BC: `EXEC_WRITE(`_SP - 1, `_B) `INSN_stack_DE: `EXEC_WRITE(`_SP - 1, `_D) `INSN_stack_HL: `EXEC_WRITE(`_SP - 1, `_H) endcase 1: case (opcode[5:4]) `INSN_stack_AF: `EXEC_WRITE(`_SP - 2, `_F) `INSN_stack_BC: `EXEC_WRITE(`_SP - 2, `_C) `INSN_stack_DE: `EXEC_WRITE(`_SP - 2, `_E) `INSN_stack_HL: `EXEC_WRITE(`_SP - 2, `_L) endcase 2: begin /* Twiddle thumbs. */ end 3: begin `EXEC_NEWCYCLE `EXEC_INC_PC end endcase end `endif `ifdef WRITEBACK `INSN_PUSH_reg: begin /* PUSH is 16 cycles! */ case (cycle) 0: begin /* type F */ end 1: begin /* type F */ end 2: begin /* type F */ end 3: `_SP <= `_SP - 2; endcase end `endif