Programming an EPCS4 using JTAG and Quartus II + SFL

It's possible that Quartus programmer is confused by the other device in the chain.

I use another method to flash an EPCS with a .jic file:[list][*]begin with a FPGA without the SFL image

[*]click "Autodetect". You should see both your devices

[*]if the atmel is identified as "UNKNOWN", edit it and give it a name. Strangely when the Quartus programmer sees an "UNKNOWN" component in the chain it is capable of configuring an FPGA but can't flash an EPCS

[*]left click and then right click on the FPGA (yes I know, it doesn't work if the FPGA isn't selected before you right click...) and select Edit... > Attach Flash Device

[*]In the list, select your EPCS

[*]You should now have a line for the EPCS. Put your .jic file in the "File" field of the EPCS

[*]Select "Program/Configure" on the FPGA line and "Program/Configure" and "Verify" on the EPCS line

[*]Click "start"[/list]