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Altera_Forum's avatar
Altera_Forum
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13 years ago

RAM and FLASH shared bus don't worked

Hello everyone, I developped my own custom board which have MT48LC16M16 (Micron SDRam), S29AL032D (Spansion Flash) and Cyclone III EP3C25. RAM and FLASH share data and address bus. The Flash me...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

The flash seems to be correctly identified by CFI.

I suggest you to assign the flash to address 0x00000000,

and assign reset_vector to 0x00000000 in Nios II Cpu configuration.

Have you tried to download to flash via command line ? to see if successful flash programming.

Don't be disturbed with 8bits or 16bits for software.

Do you correctly configure SDRAM controller.