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Altera_Forum's avatar
Altera_Forum
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19 years ago

About Reduced RAM and flash

hi all:

i'd like to make a cyclone niosII board,i want to known the smallest ram and flash capapicity.And where need i revised the uClinux source.

THANKS

My english is bad,sorry!

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    Hi,

    it will depend on your application.

    If you use initramfs, a possible configuration could be

    4 MByte CFI Flash

    16 MByte DDR

    It is probably a good idea to try out everything on the Altera Eval Brd first.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    consider using the EPCS device for flash instead of External flash - it can hold quite a bit!

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    The other person is correct it will depend on your application. But the minimum size you can get away with is 4MB for flash (2MB for the kernel, 2MB for shell, utilities and your applications) and 8MB for SDRAM. If your application is large or you are going to manipulate or transfer large quantities of data 8MB of SDRAM is probably not going to be enough for uClinux.