[Xc3sprog-users] Xilinx Spartan6 (XC6SLX75) reset behaviour different from Impact

[Jiri G. <ji...@ga...>]

I noticed that when programming a certain design on a Spartan6 (XC6SLX75)
board, the design will not start properly (no clocks) until the reset button
is pressed. This will reset the DCMs and the clocks will start. When programming
the device with Impact, the design works immediately without the need for applying
reset. On Spartan3 and Virtex4 boards it works fine and I could not notice and
difference between xc3prog and Impact. Is this a known feature of xc3prog or am
I the only one with this problem? I am using a Digilent USB-JTAG cable (Xilinx
DCL10 compatible) with the -c xpc option.

Jiri.