Reading in values from file

Discussion in 'VHDL' started by bubbagumper6, Apr 6, 2011.

  1. bubbagumper6

    bubbagumper6

    Joined:
    Apr 6, 2011
    Messages:
    1
    I'm trying to implement an image processing system in Xilinx and right now I'm stuck on reading in the values. I'm using PGM image format because it stores the pixel values in ascii format so it's easy to to read them in. However the first 4 lines I need to read in and disregard (don't need the data) but I keep getting an error. Below is the segment of code I'm referring to. It gives me an error on the bolded part.

    It says: VHDL source expression not yet supported: 'DerefOp'.

    I tried changing the row'length expression to row /= null and I just get the same error but with 'DerefOp' replaced with 'NullValue'

    Any ideas?
    Last edited: Apr 6, 2011
    bubbagumper6, Apr 6, 2011
    #1
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Darrel
    Replies:
    3
    Views:
    652
    Kevin Spencer
    Nov 11, 2004
  2. Luis Esteban Valencia
    Replies:
    0
    Views:
    361
    Luis Esteban Valencia
    Jun 20, 2005
  3. blabla120@gmx.net
    Replies:
    0
    Views:
    766
    blabla120@gmx.net
    Sep 15, 2006
  4. srikanth
    Replies:
    1
    Views:
    266
    Mike Wahler
    Jun 28, 2005
  5. Karim Ali

    Reading a file and resuming reading.

    Karim Ali, May 25, 2007, in forum: Python
    Replies:
    2
    Views:
    354
    Hrvoje Niksic
    May 25, 2007
Loading...

Share This Page