Quartus 8 & NIOS flash problem...

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have already resolved the problem? I am stumped upon exactly the same problem as you, except that i am using sumsang sram(2MB,32 data width), and the system works at 75MHz.

i don't konw if you have set the skew. if not, you should try -3.5ns to -1.17ns (2 cycles of read latency):)

but when i try to set the snew, it still doesn't work when i download the .jic file into the EPCS16I8.:mad:

Does anyone here have ideas about this problem?

Thanks in advance

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Hi schokolade

Yes we have solved the problem which was hidden in our schematic. While everything on our board was wired correctly the names for our SRAM were mixed up. To clarify: we had the byte enables swapped so when the bootloader started loading SRAM it loaded it incorrectly and hence the processor couldn't start. I did use my own custom design for SRAM with worst case settings (Ts: 1ns, Tr,Twr: 12ns, Th: 2ns) which with the system clock of 40MHz comes to about Tr,Twr 25ns measured.

If there is anything else you need to know just ask :)

Have fun