Epson 3865X Plus - Manual (Page 105)

Using Expanded Memory Beyond 640KB
The Equity 386SX PLUS comes with either 1MB or 2MB of
random access memory. MS-DOS and your application
programs that run under MS-DOS use the first 640KB of
memory. You can use the memory above 640KB as extended
memory, or you can use it as expanded memory, as described
below.
Expanded memory can be used by certain application programs
(such as Lotus 1-2-3) that support the Lotus/Intel/Microsoft
Expanded Memory Specification (LIM 4.0 EMS). To take
advantage of expanded memory, you need to use a memory
manager to convert the computer’s extended memory to
expanded memory.
Your dealer may have given you a memory management
software package when you bought your Equity 386SX PLUS.
If so, you can use this memory manager with either version of
MS-DOS. Just follow the instructions included with the
package.
If you are using version 4.01 of MS-DOS and you did not
receive a memory manager, you can use the MS-DOS program
EMM386.SYS to convert your extended memory to expanded
memory. This utility is included with your version of MS-DOS.
See your MS-DOS Reference Manual for instructions on using
EMM386.SYS.
If you are using version 3.3 of MS-DOS and you did not receive
a memory manager with your system, ask your authorized Epson
dealer which expanded memory manager program you should
use.
Enhancing System Operations 4-13