Finish splitting out functions.

[fpgaboy.git] / insn_jp-jpcc.v

`ifdef EXECUTE
	`INSN_JP_imm,`INSN_JPCC_imm: begin
		case (cycle)
		0:	begin
				`EXEC_INC_PC;
				`EXEC_NEXTADDR_PCINC;
				rd <= 1;
			end
		1:	begin
				`EXEC_INC_PC;
				`EXEC_NEXTADDR_PCINC;
				rd <= 1;
			end
		2:	begin
				`EXEC_INC_PC;
				if (!opcode[0]) begin	// i.e., JP cc,nn
					/* We need to check the condition code to bail out. */
					case (opcode[4:3])
					`INSN_cc_NZ:	if (registers[`REG_F][7]) begin `EXEC_NEWCYCLE; end
					`INSN_cc_Z:	if (~registers[`REG_F][7]) begin `EXEC_NEWCYCLE; end
					`INSN_cc_NC:	if (registers[`REG_F][4]) begin `EXEC_NEWCYCLE; end
					`INSN_cc_C:	if (~registers[`REG_F][4]) begin `EXEC_NEWCYCLE; end
					endcase
				end
			end
		3:	begin
				`EXEC_NEWCYCLE;
			end
		endcase
	end
`endif

`ifdef WRITEBACK
	`INSN_JP_imm,`INSN_JPCC_imm: begin
		case (cycle)
		0:	begin /* type F */ end
		1:	tmp <= rdata;	// tmp contains newpcl
		2:	tmp2 <= rdata;	// tmp2 contains newpch
		3:	{registers[`REG_PCH],registers[`REG_PCL]} <=
				{tmp2,tmp};
		endcase
	end
`endif