From 5e972e7446edb79f8ed582970b2dff40a93919ae Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 1 Feb 2012 18:02:59 -0800
Subject: b100: sc8 mode not implemented error

---
 host/lib/usrp/b100/io_impl.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/host/lib/usrp/b100/io_impl.cpp b/host/lib/usrp/b100/io_impl.cpp
index 60c37bded..7c07c6349 100644
--- a/host/lib/usrp/b100/io_impl.cpp
+++ b/host/lib/usrp/b100/io_impl.cpp
@@ -260,6 +260,10 @@ tx_streamer::sptr b100_impl::get_tx_stream(const uhd::stream_args_t &args_){
     args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
     args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
 
+    if (args.otw_format == "sc8"){
+        throw uhd::value_error("USRP TX requested wire format not implemented in FPGA: " + args.otw_format);
+    }
+
     //calculate packet size
     static const size_t hdr_size = 0
         + vrt::max_if_hdr_words32*sizeof(boost::uint32_t)
-- 
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