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We have problems to get a new design configured.
The programmer (PC application launched from Quartus II) tells that we succeed, but CONF_DONE is not released on the target.
JTAG and AS-mode gives the same result - green Successful sign, but no system in active mode.
We have tested with different Quartus versions.
The last tests running Quartus II 64-bit ver. 12.1.
We haven't forgot to check options for DEV_OE etc.
The hardware interface is according to Altera standard, with pullup/pulldown resistors etc.
Core voltage and bank voltages are correct.
MSEL0=L, MSEL=L, MSEL2=H
The SPI-flash used is 25P28V6P (a 128MBit type).
It is not an Altera/Intel-labeled device, but no other types were available for this fast protype.
I haven't measured waveforms during serial transfer yet.
I have never seen such problems before.
Any idea would be helpful.
Thanks in advance.
/Pär
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UPDATE :
JTAG problem was project related, now working.
AS still NOT working.
"Disable EPCS ID Check" is checked (took a while to find a Quartus version with this feature working, not working in 12.0 and 12.1).
My only guess is that the SPI flash (25P28V6P) is not is supported by the Cyclone IV.
I will now test this one instead : MT25QL128ABA8ESF-0SIT
i would be grateful for comments on this...
To find a config memory is always tricky. You can easily find 10 tables with compatible devices on the web, but all devices obsolete.
Recommended EPCS works, but no devices were available when our prototype was assembled.
I have never understood Alteras strange behavior regarding pricing, especially on EPCS - with a standard list price of $100000000000.
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