--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fc-uja/schem+bom/vsrc/application_block.v	Mon Oct 21 00:53:38 2019 +0000
@@ -0,0 +1,66 @@
+/*
+ * This module encapsulates the application function of our board:
+ * going from FT2232D to target interfaces.
+ */
+
+module application_block (GND, P_3V3, P_2V8, ADBUS, ACBUS, BDBUS);
+
+input GND, P_3V3, P_2V8;
+
+inout [7:0] ADBUS, BDBUS;
+inout [3:0] ACBUS;
+
+/* target interface wires */
+
+wire JTAG_TCK, JTAG_TDI, JTAG_TDO, JTAG_TMS;
+wire nTESTRESET;
+wire UART_TxD, UART_RxD;
+
+target_if target_if (	.GND(GND),
+			.JTAG_TCK(JTAG_TCK),
+			.JTAG_TDI(JTAG_TDI),
+			.JTAG_TDO(JTAG_TDO),
+			.JTAG_TMS(JTAG_TMS),
+			.nTESTRESET(nTESTRESET),
+		  	.nEMU[0](ACBUS[2]),
+		  	.nEMU[1](ACBUS[3]),
+			.UART_TxD(UART_TxD),
+			.UART_RxD(UART_RxD)
+	);
+
+/* output buffers */
+
+buffer_ic_common output_buf_common (.Vcc(P_2V8), .GND(GND));
+capacitor output_buf_bypass_cap (P_2V8, GND);
+
+buffer_ic_slot buf_JTAG_TCK (.A(ADBUS[0]), .Y(JTAG_TCK), .nOE(ADBUS[5]));
+buffer_ic_slot buf_JTAG_TDI (.A(ADBUS[1]), .Y(JTAG_TDI), .nOE(ADBUS[5]));
+buffer_ic_slot buf_JTAG_TMS (.A(ADBUS[3]), .Y(JTAG_TMS), .nOE(ADBUS[5]));
+
+buffer_ic_slot buf_UART_TxD (.A(BDBUS[0]), .Y(UART_TxD), .nOE(GND));
+
+/* input buffers */
+
+buffer_ic_common input_buf_common (.Vcc(P_3V3), .GND(GND));
+capacitor input_buf_bypass_cap (P_3V3, GND);
+
+buffer_ic_slot buf_JTAG_TDO (.A(JTAG_TDO), .Y(ADBUS[2]), .nOE(ADBUS[6]));
+buffer_ic_slot buf_UART_RxD (.A(UART_RxD), .Y(BDBUS[1]), .nOE(GND));
+
+/* input pull-up resistors */
+
+resistor JTAG_TDO_pullup (JTAG_TDO, P_2V8);
+resistor UART_RxD_pullup (UART_RxD, P_2V8);
+
+/* reset signal driver */
+
+od_buffer reset_driver (.GND(GND), .Vcc(P_3V3), .A(ADBUS[7]), .Y(nTESTRESET));
+capacitor reset_driver_bypass_cap (P_3V3, GND);
+
+/* pull-up resistors on control lines */
+
+resistor ADBUS5_pullup (ADBUS[5], P_3V3);
+resistor ADBUS6_pullup (ADBUS[6], P_3V3);
+resistor ADBUS7_pullup (ADBUS[7], P_3V3);
+
+endmodule