Apple 6400 appendix Using older Macintosh programs, Special memory requirements

Using application programs designed for the PowerPC microprocessor

Your Macintosh is compatible with most application programs intended for use with Macintosh computers, but certain programs are designed especially for computers that have the PowerPC microprocessor. (These programs are sometimes called “native” applications.) These programs take best advantage of your computer’s speed.

Special memory requirements

Some native applications may be slightly larger than other programs and may take up more memory. If you find that you are running out of memory when you use one of these programs, you can use space on your computer’s hard disk as additional memory, which is called virtual memory. For instructions on how to use virtual memory, see the “Memory” topic of Macintosh Guide, available in the Guide (h) menu.

You can also add more memory to your computer, as described in

Appendix B, “Installing Additional Memory.”

Using older Macintosh programs

If you experience problems using an older Macintosh program, it may be incompatible with your Macintosh. You may be able to use your older program if you turn off Modern Memory Manager. To do this, pull down the Apple (K) menu, open the Control Panels submenu, and select the Memory control panel. Then turn off Modern Memory Manager.

Using Programs and Backing Up Disks 65