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Altera_Forum's avatar
Altera_Forum
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13 years ago

Pin assignment for Flash and SDRAM of DE2-70

Dear my friends

I wanna make pin assignments for flash and Sdram of DE2-70 altera kit but I don't know which one is correct. Could you check it for me (I've attached it in this message)?

what is the pin

"select_n_to_the_cfi_flash_0"?

"tri_state_bridge_0_readn"?

"write_n_to_the_cfi_flash_0"?

Thank you very much

6 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    "select_n_to_the_cfi_flash_0" : FLASH_CE_N pin AG28

    "tri_state_bridge_0_readn" : FLASH_OE_N pin AG29

    "write_n_to_the_cfi_flash_0" : FLASH_WE_N pin AJ29
  • Altera_Forum's avatar
    Altera_Forum
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    --- Quote Start ---

    "select_n_to_the_cfi_flash_0" : FLASH_CE_N pin AG28

    "tri_state_bridge_0_readn" : FLASH_OE_N pin AG29

    "write_n_to_the_cfi_flash_0" : FLASH_WE_N pin AJ29

    --- Quote End ---

    Thank you very much. I got it. I try it now, if I have any problem could I ask again?

    Best regards
  • Altera_Forum's avatar
    Altera_Forum
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    After compiling and downloading to FPGA, I'd run NIOS II and got this error. How can I fix this error?

    --- Quote Start ---

    **** Build of configuration Release for project Homwork ****

    make -s all includes

    1 [main] ? (6404) c:\altera\90\quartus\bin\cygwin\bin\sh.exe: *** fatal error - couldn't allocate heap, Win32 error 487, base 0x680000, top 0x690000, reserve_size 61440, allocsize 65536, page_const 4096

    0 [main] sh 3916 fork: child -1 - died waiting for longjmp before initialization, retry 0, exit code 0x100, errno 11

    /bin/sh: fork: Resource temporarily unavailable

    /bin/sh: /cygdrive/c/altera/90/nios2eds: is a directory

    cygpath: can't convert empty path

    /cygdrive/c/altera/90/nios2eds/components/altera_hal/build/system_rules.mk:120: /components/altera_hal/build/gnu_rules.mk: No such file or directory

    /cygdrive/c/altera/90/nios2eds/components/altera_hal/build/system_rules.mk:124: /components/altera_hal/build/gtf_rules.mk: No such file or directory

    make[1]: *** No rule to make target `/components/altera_hal/build/gtf_rules.mk'. Stop.

    make: *** [system_project] Error 2

    Build completed in 5.478 seconds

    --- Quote End ---

  • Altera_Forum's avatar
    Altera_Forum
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    Which version of Quartus are you using? IIRC this is a common problem with Cygwin. If you search the forum with cygwin, fork and/or "couldn't allocate head" you should have some answers.

  • Altera_Forum's avatar
    Altera_Forum
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    --- Quote Start ---

    Which version of Quartus are you using? IIRC this is a common problem with Cygwin. If you search the forum with cygwin, fork and/or "couldn't allocate head" you should have some answers.

    --- Quote End ---

    I used Quartus II 9.0
  • Altera_Forum's avatar
    Altera_Forum
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    Yes I think it was a very common problem with Quatrus II 9.0. I don't remember if there was a fix though.