diff --git a/rayer_spi.c b/rayer_spi.c
index f8dff951c..189341ad3 100644
--- a/rayer_spi.c
+++ b/rayer_spi.c
@@ -63,11 +63,16 @@ static const struct rayer_pinout rayer_spipgm = {
 	.miso_bit = 6,
 };
 
+static void dlc5_preinit(const void *);
+static int dlc5_shutdown(void *);
+
 static const struct rayer_pinout xilinx_dlc5 = {
 	.cs_bit = 2,
 	.sck_bit = 1,
 	.mosi_bit = 0,
 	.miso_bit = 4,
+	.preinit =  dlc5_preinit,
+	.shutdown = dlc5_shutdown,
 };
 
 static void byteblaster_preinit(const void *);
@@ -257,6 +262,21 @@ static int stk200_shutdown(void *data) {
 	return 0;
 }
 
+static void dlc5_preinit(const void *data) {
+	msg_pdbg("dlc5_preinit\n");
+	/* Assert pin 6 to receive MISO. */
+	lpt_outbyte |= (1<<4);
+	OUTB(lpt_outbyte, lpt_iobase);
+}
+
+static int dlc5_shutdown(void *data) {
+	msg_pdbg("dlc5_shutdown\n");
+	/* De-assert pin 6 to force MISO low. */
+	lpt_outbyte &= ~(1<<4);
+	OUTB(lpt_outbyte, lpt_iobase);
+	return 0;
+}
+
 #else
 #error PCI port I/O access is not supported on this architecture yet.
 #endif