thodg/cgminer

diff --git a/libbitfury.c b/libbitfury.c
index 4cc7172..9610e15 100644
--- a/libbitfury.c
+++ b/libbitfury.c
@@ -181,6 +181,14 @@ void spi_add_break(struct bitfury_info *info)
 	spi_add_buf(info, "\x4", 1);
 }
 
+void spi_add_fasync(struct bitfury_info *info, int n)
+{
+	int i;
+
+	for (i = 0; i < n; i++)
+		spi_add_buf(info, "\x5", 1);
+}
+
 static void spi_add_buf_reverse(struct bitfury_info *info, const char *buf, const int sz)
 {
 	int i;
diff --git a/libbitfury.h b/libbitfury.h
index 90a79c5..884ee57 100644
--- a/libbitfury.h
+++ b/libbitfury.h
@@ -21,6 +21,7 @@ void spi_send_init(struct bitfury_info *info);
 void spi_clear_buf(struct bitfury_info *info);
 void spi_add_buf(struct bitfury_info *info, const void *buf, const int sz);
 void spi_add_break(struct bitfury_info *info);
+void spi_add_fasync(struct bitfury_info *info, int n);
 void spi_add_data(struct bitfury_info *info, uint16_t addr, const void *buf, int len);
 bool spi_reset(struct cgpu_info *bitfury, struct bitfury_info *info);
 bool mcp_spi_txrx(struct cgpu_info *bitfury, struct bitfury_info *info);