You may also want to install an 80387SX, 16 MHz math coprocessor in your computer to speed up mathematical calculations in certain application programs. Check with your authorized Epson dealer to see which options are available.

Operating Systems and Other Software

You probably have a version of MS-DOS: the operating system by Microsoft? to use with your Equity 386SX PLUS. Epson has enhanced MS-DOS by adding two time-saving utilities-HELP and MENU-that make it easier to use. The HELP program lets you display information on the screen about any MS-DOS command. MENU provides an easy way to run many useful MS-DOS commands.

Version 4.01 of MS-DOS also includes the Shell program, which lets you run MS-DOS commands by selecting options from on-screen menus. MS-DOS version 3.3 comes with the XTREE® program. XTREE allows you to use on-screen menus to perform a wide variety of file and directory operations.

You probably also purchased other software; you can use virtually any application program designed for the IBM PC,

PC XT, PC AT, or compatible computers on your Equity 386SX PLUS. You may also use powerful 32-bit software-such as Microsoft Windows/386™-with your computer.