Due to a problem in the Quartus® II software versions 10.0 SP1 and earlier, you may be unable to perform channel reconfiguration if the error port on the ALTGX_RECONFIG megafunction is enabled in Cyclone® IV GX devices. When this problem occurs, when the write_all port is asserted and the reconfig_address is set to 0, the error port is asserted and the channel_reconfig_done port is asserted for only one clock cycle.
A patch is available to fix this problem for the Quartus II software versions 10.0 and 10.0 SP1. Download and install the patch from the appropriate link below.
- Quartus II software version 10.0
- Quartus II software version 10.0 SP1
This problem is scheduled to be fixed in a future version of the Quartus II software.