Setting shared memory
You can install a 72-pin SIMM(Single Inline Memory Module) on the DOS-
compatibility card in your computer to give the card up to 32 MB of RAM for
its exclusive use. When no memory module is installed, the card uses a
portion of the RAMi nstalled in your Macintosh.
If your computer came with a memory module already installed on the
DOS-compatibility card, you cannot share memory between the Mac OS and
the PC environment. The PC environment uses the memory installed on the
DOS-compatibility card exclusively. The shared memory options in the
PC Setup control panel will be dimmed (unavailable). See theTechnical
Informationbooklet to determine whether your computer contains a memory
module installed on the DOS-compatibility card.
m
Choose the amount of memory you want for the PC environment in the RAM
pop-up menu.
In the RAM pop-up menu, a small square (M) shows the RAM that the PC is
currently using and a bullet (•) indicates how much RAM you assigned.
When the Macintosh starts up, it claims RAM for its own use before it sets
aside RAMfor the PC. If the PC has less RAM than you installed, turn off
the Mac OS RAM disk (if you’re using one) in the Memory control panel.
You may also need to decrease the disk cache size in the Memory control
panel to 128K or less.
Memory changes take place when you restart the Macintosh.
IMPORTANT
Memory that you set aside for the PC environment is not
available to the Mac OS. To make this memory available, you must turn off
the PC environment (click the Off button at the top of the PC Setup control
panel) and restart the Macintosh.
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Configuring the PC Environment