diff --git a/src/gateware/zc706.py b/src/gateware/zc706.py
index 92c9208..3b304d9 100755
--- a/src/gateware/zc706.py
+++ b/src/gateware/zc706.py
@@ -25,6 +25,7 @@ import analyzer
 import acpki
 import drtio_aux_controller
 import zynq_clocking
+import coaxpress_4r
 from config import write_csr_file, write_mem_file, write_rustc_cfg_file
 
 class SMAClkinForward(Module):
@@ -648,6 +649,14 @@ class _NIST_QC2_RTIO:
         self.add_rtio(rtio_channels)
 
 
+class _CXP_FMC_RTIO():
+    """
+    CoaXpress FMC with 4 CXP channel and 1 SMA trigger
+    """
+    def __init__(self):
+        platform = self.platform
+        platform.add_extension(coaxpress_4r.fmc_adapter_io)
+
 class NIST_CLOCK(ZC706, _NIST_CLOCK_RTIO):
     def __init__(self, acpki, drtio100mhz):
         ZC706.__init__(self, acpki)
@@ -680,8 +689,14 @@ class NIST_QC2_Satellite(_SatelliteBase, _NIST_QC2_RTIO):
         _SatelliteBase.__init__(self, acpki, drtio100mhz)
         _NIST_QC2_RTIO.__init__(self)
 
+class CXP_FMC(ZC706, _CXP_FMC_RTIO):
+    def __init__(self, acpki, drtio100mhz):
+        ZC706.__init__(self, acpki)
+        self.submodules += SMAClkinForward(self.platform)
+        _CXP_FMC_RTIO.__init__(self)
+
 VARIANTS = {cls.__name__.lower(): cls for cls in [NIST_CLOCK, NIST_CLOCK_Master, NIST_CLOCK_Satellite,
-                                                  NIST_QC2, NIST_QC2_Master, NIST_QC2_Satellite]}
+                                                  NIST_QC2, NIST_QC2_Master, NIST_QC2_Satellite, CXP_FMC]}
 
 def main():
     parser = argparse.ArgumentParser(