disable "Set Data bits LowByte" for ft2232_transfer, seems to be

superfluous and decreases cable performance (Jie Zhang)

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1654 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

diff --git a/urjtag/ChangeLog b/urjtag/ChangeLog
index a4d1edf..a0cff6a 100644 (file)
--- a/urjtag/ChangeLog
+++ b/urjtag/ChangeLog
@@ -1,3 +1,9 @@
+2009-07-10  Arnim Laeuger  <arniml>
+
+  * src/tap/cable/ft2232.c: disable "Set Data bits LowByte" for
+    ft2232_transfer, seems to be superfluous and decreases cable performance
+    (Jie Zhang)
+
 2009-06-15  Arnim Laeuger  <arniml>
 
   * src/bus/mpc824x.c: experimental support for x16 mode, including help 

diff --git a/urjtag/src/tap/cable/ft2232.c b/urjtag/src/tap/cable/ft2232.c
index 7d39335..9b774e2 100644 (file)
--- a/urjtag/src/tap/cable/ft2232.c
+++ b/urjtag/src/tap/cable/ft2232.c
@@ -1344,10 +1344,12 @@ ft2232_transfer_schedule (urj_cable_t *cable, int len, const char *in,
     int bitwise_len;
     int chunkbytes;
 
+#if 0
     /* lower TMS for transfer
        also lower TCK to ensure correct clocking */
     ft2232_set_signal_schedule (params, URJ_POD_CS_TCK | URJ_POD_CS_TMS, 0, 1,
                                 0);
+#endif
 
     chunkbytes = len >> 3;
     while (chunkbytes > 0)