TITLE
    DOS Compatibility Card: Maximum Amount of Shared RAM
Article ID:
Created:
Modified: 		18115
7/10/95
2/2/98
TOPIC

    I have a Power Macintosh DOS Compatibility Card, and I am sharing memory from the Macintosh logic board. How does the PC Setup control panel determine which memory choices to make available?

DISCUSSION


    Memory allocated in the PC Setup Control Panel is shared in the following increments: 2, 4, 8, 16, 32, and 64 MB. The PC Setup control panel allows you to choose any one of these settings with the following constraints:
    • The DOS Compatibility Card can only share up to half of the Macintosh logic board's RAM.
    • Based on the one half constraint and the amount of RAM available, the PC Setup offers the next lowest increment.
    • Memory sharing only works if no SIMM is installed on the DOS Compatibility Card .
    Examples

    RAM Installed on                PC Setup control Panel
    Macintosh Logic Board           Offers
    ---------------------           ----------------------
    8 MB                           2 and 4 MB
    16 MB                           2, 4, and 8 MB
    24 MB                           2, 4, and 8 MB
    40 MB                           2, 4, 8, and 16 MB*

    Note: one half of 40 MB is 20 MB and the next lowest increment is 16 MB.

Document Information
Product Area: Computers
Category: DOS Compatible
Sub Category: DOS Compatibility Cards
Keywords: kwindows

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