16-bit flash as code storage

Thanx.

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originally posted by niosiiuser+feb 21 2006, 03:50 pm--><div class='quotetop'>quote (niosiiuser @ feb 21 2006, 03:50 pm)</div>

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for getting more information about the epc4 you have to look into the datasheet of the mt28f400b3from micron (http://download.micron.com/pdf/datasheets/flash/boot_block/f45.pdf) because this one is inside the epc4.[/b]

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sure. problem in nios. there is no any detiled information on memory acces, like waveforms and sopc settings, that displays access to memory differ than 32 bit.

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originally posted by niosiiuser@feb 21 2006, 03:50 pm

imho the epc4 must be used in word-mode (byte# = vcc). so a0 of the flash is for word-wide-adressing and the a1 of the nios must be connected with a0 of the flash.

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thanx

<!--quotebegin-niosiiuser@Feb 21 2006, 03:50 PM

btw: if you are planning a new design it would be easier and much cheaper to use the actual devices like cyclone ii and statix ii with state-of-the-art serial configuration devices (e.g. epcs4).

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thanx for advice.

but we are fixing previous design based on stratix and we are need custom bootloader, so parallel flash seems to be easy to handle.

btw: do you know Quartus progremmer program the flash?

does it erase whole flash or just page 0?

and where is information about how flash memory used?

which areas free to use by external apications?