X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/77ab69d7bb0902e6ebf0994159ed2205f8413e34..b057a5d6e6db6db06ae33703ca72cd235eec91d6:/core/insn_vop_intr.v

diff --git a/core/insn_vop_intr.v b/core/insn_vop_intr.v
new file mode 100644
index 0000000..ce0bcf8
--- /dev/null
+++ b/core/insn_vop_intr.v
@@ -0,0 +1,27 @@
+`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