Apple PC Compatibility Card 7-inch card - Manual (Page 12)

The PC Compatibility Card lets you use DOS, Windows 3.1, Windows 3.11,
Windows for Workgroups, and Windows 95 applications directly on your
Macintosh computer. It includes a high-performance microprocessor that’s
compatible with the latest DOS and Windows software. You can:
m simultaneously run the Macintosh operating system (Mac OS) and PC
applications
m switch between the Mac OS and PC environments at any time without
quitting the applications you’re using
m view the current environment on a single monitor, or view both
environments simultaneously on two monitors
m use the same hard disk for both Mac OS and PC software
m use your Macintosh keyboard and one-button or multibutton Apple
Desktop Bus (ADB)–compatible mouse with PC software
m use your Macintosh modem, monitor, and printer with PC software, or
connect PC-compatible equipment
m with some models, use a joystick or other game controller with PC
applications
m with some models, connect MIDI equipment
m add random-access memory (RAM) to the PC Compatibility Card
m use the built-in Macintosh serial ports with PC software
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Preface