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Altera_Forum's avatar
Altera_Forum
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20 years ago

i am confused by the flash address

hi all i use am29lv160db as the flash of nios system, i set it to work under the mode of 16 bit, and the address is 20 bit! the address that the flash is assigned to by the sopc is from 0x00000...
Altera_Forum's avatar
Altera_Forum
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20 years ago

With a 16-bit data bus you'll probably find the A0 line doesn't do anything; you'll need to connect the SOPC A1 to flash A0, A2 to A1 etc.

If you want to write single bytes, you must use the "byteenable" signals.

This is similar to how a 68000 processor works.