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Altera_Forum's avatar
Altera_Forum
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21 years ago

Nios 1 to Nios 2

Up till now I have only played with NIOS2. I have many NIOS1 (3.01) designs out in the field and it has served me well. Problem. I developed a small dev board running NIOS1 with 128KB SRAM, 1M...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

It looks like I can read from both the Flash and CS8900 but cannot write to them.

Like I said before I have checked with a scope to see if there is signal and it looks OK. Will quickly try again with known working Flash code.

I have thought that NIOS2 jumbled the address or data lines up. Garbage put in a certain way will come out exactly the same way on RAM. Flash however needs a specific code to write and erase data. But the data written by NIOS1 is the same as read by NIOS2, meaning that the address and data lines are correct.

Will check and come back

VictorS