While I'm waiting for EDK to be delivered I thought I'd play around with a hardware-only design.
I made a trivial LED flasher, and went to download it through Parallel Cable IV / JTAG.
I'm using ISE 6.3.
When I use impact 6.3.03i to load the LX25 bit file (I'm bypassing the other three devices) I get:
WARNING:iMPACT:1049 - Startup Clock has been changed to 'JtagClk' in the bitstream stored in memory, but the original bitstream file remains unchanged.
If I ignore this and program anyway, I get six errors on verify. Multiple write/verify cycles always give six errors.
The design seems to work though.
What am I doing wrong? The V4 is ES if that's significant.
Thanks
Pete