TITLE
    LaserWriter IINTX: RAM Allocation
Article ID:
Author:
Created:
Modified: 		6655

3/1/91
3/1/91
TOPIC




    How much RAM is needed to get a second page buffer with legal-size paper on
    LaserWriter IINTX?

DISCUSSION


    Additional RAM does not provide space for a "second page buffer" in the
    LaserWriter IINTX. We found the following information on page 122 of the
    "LaserWriter IINT/NTX Owner's Guide" (ROM revision 3.0 version):

    Memory Upgrades

    You can install up to 12MB of RAM in the LaserWriter IINTX. You can also
    add a font expansion card. These memory upgrades are not possible on the
    LaserWriter IINT.

    RAM upgrades for the LaserWriter IINTX provide the following benefits:

    * the ability to print very complex documents (graphics and CAD documents,
    for example) that might not print on printers with less memory

    * faster performance on complex documents

    * faster performance when using downloaded fonts

    * faster performance when printing documents that have been scaled down
    from larger originals (organization charts, maps, flow charts, for
    example)

    * The ability to increase the imageable area of a document (you can use
    more of a sheet of legal paper, for example)

    Adding more RAM provides these benefits in three ways:

    * More RAM allows more fonts to be downloaded (sent over the network) to
    the printer at any one time. The printer is less likely to need to
    retrieve large font files over busy network cables, saving you time and
    improving the performance of the entire network.

    * More RAM increases the space available for font caching. Before the
    LaserWriter IINTX can print, it converts the PostScript outline fonts
    into bitmaps, which it stores (caches) in RAM. When the demand for RAM
    exceeds the supply, the printer discards the less recently used bitmaps
    in favor of the newer ones. When the discarded bitmaps are needed again,
    the printer must rebuild them. With additional RAM, the printer will
    need to rebuild bitmaps less often.

    * Finally, more RAM gives your printer more space to store the calculations
    it uses to compute large or complex page layouts. This is why you can
    print more complex documents and use a larger imageable area when you
    install more RAM.


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