Re: Why doesn't this NASM program work? It loops endlessly

From: Francesca (spamtrap_at_crayne.org)
Date: 03/27/05

  • Next message: nanoman: "sdk-86 help needed, please" 
    Date: Sun, 27 Mar 2005 01:04:08 +0000 (UTC)

    >
    >
    > There is no such thing as a MASM segment.

    As I have already told, I am an absolute beginner, and I have started to
    study, but every book I have read, always start talking about bit, bytes,
    memory, binary arithmetics, then, they immediately jump into Assembly
    programming.

    > Segment either refers to the addressable range using one of the
    segment

    I only asked what are bss, text segments in NASM. I didn't found them in NASM manual, some hint somewhere, but nothing clearly and deeply
    explained

    > For a Linux code file what is labeled as the code (text) segment is
    > memory mapped to pages of memory that are set to read and execute only,
    > while data is memory mapped to pages marked as read and write (not
    > exactly b/c writing to this does not change the on disk file, but you
    > should get the idea). The size of the bss segment is used to allocate
    > enough pages to hold that much memory, but this memory is not mapped to
    > any file. (this explination mixes virtual/real memory, so it isn't
    > completely accruate, but should get the idea accross and shouldn't
    > matter).

    SOmething like your explaination I would have liked to read in all the
    material I have read about Nasm programming.

    > From what I have read in this thread, you really should invest in a
    > decent intro x86 assembly text book b/c you really seem to be messing up
    > on some really basic stuff.

    Well, I am an absolute beginner with Assembly for X86 CPUs, as I have
    already explayned, I would like to learn. But what I would like is some
    book that starts explaining elementary operations like:

    - how to assign values to register/variables
    - how to read data from keyboard
    - how to display it to the screen
    - how to sum, moltiply, divide, subtract two operands and display the
    result to the screen
    - how to use if ..then and loops

    After that I could be more confortable with Assembly.

    > Assembly Language Step-by-step: Programming with DOS and Linux (with
    > CD-ROM) by Jeff Duntemann
    > http://www.amazon.com/exec/obidos/ASIN/0471375233/qid=1111874431/sr=2-3/ref=pd_ka_b_2_3/103-3872261-7017456

    I'll read it. Hope it is at a very basic level

    Thank you

    Francesco

  • Next message: nanoman: "sdk-86 help needed, please"

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