diff --git a/spiOverJtag/build.py b/spiOverJtag/build.py
index 0cfcadc..d51c693 100755
--- a/spiOverJtag/build.py
+++ b/spiOverJtag/build.py
@@ -76,7 +76,7 @@ if tool in ["ise", "vivado"]:
         "xc6slx45csg324"   : "xc6s_csg324",
         "xc6slx100fgg484"  : "xc6s_fgg484",
         "xc6slx150tcsg484" : "xc6s_csg484",
-        "xc6slx150tfgg484" : "xc6s_fgg484",
+        "xc6slx150tfgg484" : "xc6s_t_fgg484",
         "xc6vlx130tff784"  : "xc6v_ff784",
         "xc7a15tcpg236"    : "xc7a_cpg236",
         "xc7a25tcpg238"    : "xc7a_cpg238",
diff --git a/spiOverJtag/constr_xc6s_fgg484.ucf b/spiOverJtag/constr_xc6s_fgg484.ucf
index 8c18843..ffdfbae 100644
--- a/spiOverJtag/constr_xc6s_fgg484.ucf
+++ b/spiOverJtag/constr_xc6s_fgg484.ucf
@@ -2,5 +2,7 @@ CONFIG VCCAUX = "2.5";
 
 NET "sdi_dq0"  LOC = AB20 | IOSTANDARD = LVCMOS25;
 NET "sdo_dq1"  LOC = AA20 | IOSTANDARD = LVCMOS25;
-NET "csn"      LOC = T5  | IOSTANDARD = LVCMOS25;
+NET "wpn_dq2"  LOC = U14  | IOSTANDARD = LVCMOS25;
+NET "hldn_dq3" LOC = U13  | IOSTANDARD = LVCMOS25;
+NET "csn"      LOC = T5   | IOSTANDARD = LVCMOS25;
 NET "sck"      LOC = Y21  | IOSTANDARD = LVCMOS25;
diff --git a/spiOverJtag/constr_xc6s_t_fgg484.ucf b/spiOverJtag/constr_xc6s_t_fgg484.ucf
new file mode 100644
index 0000000..86ea8bf
--- /dev/null
+++ b/spiOverJtag/constr_xc6s_t_fgg484.ucf
@@ -0,0 +1,8 @@
+CONFIG VCCAUX = "2.5";
+
+NET "sdi_dq0"  LOC = AB20 | IOSTANDARD = LVCMOS25;
+NET "sdo_dq1"  LOC = AA20 | IOSTANDARD = LVCMOS25;
+NET "wpn_dq2"  LOC = R13  | IOSTANDARD = LVCMOS25;
+NET "hldn_dq3" LOC = T14  | IOSTANDARD = LVCMOS25;
+NET "csn"      LOC = AA3  | IOSTANDARD = LVCMOS25;
+NET "sck"      LOC = Y20  | IOSTANDARD = LVCMOS25;