[fpgaboy.git] / insn_vop_intr.v

`ifdef EXECUTE
	`INSN_VOP_INTR: begin
		case (cycle)
		0:	`EXEC_WRITE(`_SP - 1, `_PCH)
		1:	`EXEC_WRITE(`_SP - 2, `_PCL)
		2:	begin
				irqack <= 1;
				`EXEC_NEWCYCLE
			end
		endcase
	end
`endif

`ifdef WRITEBACK
	`INSN_VOP_INTR: begin
		case (cycle)
		0:	begin end
		1:	begin end
		2:	begin
				ie <= 0;
				`_PC <= {8'b0, jaddr};
				irqack <= 0;	// Must be at the same time as we latch jaddr, or we race!
				`_SP <= `_SP - 2;
			end
		endcase
	end
`endif
Commit	Line	Data
df770340 JW	1	`ifdef EXECUTE
	2	`INSN_VOP_INTR: begin
	3	case (cycle)
5c33c5c0 JW	4	0: `EXEC_WRITE(`_SP - 1, `_PCH)
5c33c5c0 JW	5	1: `EXEC_WRITE(`_SP - 2, `_PCL)
d1b40456 JW	6	2: begin
	7	irqack <= 1;
	8	`EXEC_NEWCYCLE
	9	end
df770340 JW	10	endcase
	11	end
	12	`endif
	13
	14	`ifdef WRITEBACK
	15	`INSN_VOP_INTR: begin
	16	case (cycle)
	17	0: begin end
	18	1: begin end
	19	2: begin
	20	ie <= 0;
5509558d	21	`_PC <= {8'b0, jaddr};
d1b40456	22	irqack <= 0; // Must be at the same time as we latch jaddr, or we race!
5509558d	23	`_SP <= `_SP - 2;
df770340 JW	24	end
	25	endcase
	26	end
	27	`endif