--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/duart28c/src/vsrc/board.v	Wed Jul 29 07:08:28 2020 +0000
@@ -0,0 +1,37 @@
+module board ();
+
+wire GND, P_5V, P_3V3, P_2V8;
+
+wire [7:0] ADBUS, BDBUS;
+wire [3:0] ACBUS, BCBUS;
+
+USB_block usb ( .GND(GND),
+		.P_5V(P_5V),
+		.VCCIOA(P_3V3),
+		.VCCIOB(P_3V3),
+		.ADBUS(ADBUS),
+		.ACBUS(ACBUS),
+		.SI_WUA(P_3V3),
+		.BDBUS(BDBUS),
+		.BCBUS(BCBUS),
+		.SI_WUB(P_3V3),
+		.PWREN()	/* no connect */
+	);
+
+regulator_with_caps reg_3V3 (.GND(GND), .IN(P_5V), .OUT(P_3V3));
+regulator_with_caps reg_2V8 (.GND(GND), .IN(P_5V), .OUT(P_2V8));
+
+application_block app ( .GND(GND),
+			.P_3V3(P_3V3),
+			.P_2V8(P_2V8),
+			.ADBUS(ADBUS),
+			.BDBUS(BDBUS)
+	);
+
+/* auxiliary 5V output */
+
+header_2pin aux_5V (.pin_1(P_5V),
+		    .pin_2(GND)
+	);
+
+endmodule