Epson EQUITY 3865X/20 PLUS - Manual (Page 102)

If you are using version 4.01 of MS-DOS and you did not get
a memory manager, you can use the MS-DOS program
EMM386SYS to convert your extended memory to expanded
memory. 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 get a
memory manager with your system, ask your Epson dealer which
expanded memory manager program you should use.
Using Special VGA Features
Your built-in VGA (video graphics array) display adapter
supports both standard VGA monitors and multi-frequency
monitors with analog connectors in non-interlaced mode. The
VGA adapter allows these monitors to operate in all standard
VGA modes without requiring any special device drivers.
However, if you want to use super VGA modes, you can install
one or more of the device drivers provided on the Utility
diskette that came with your system. These drivers allow you to
use all of the capabilities of your monitor and your built-in VGA
display adapter.
The device drivers provide VGA features such as these:
800
x 600 resolution in graphics modes with 16 colors
Resolutions up to 640
x 480 in graphics modes with 256
colors
132-column text mode in 16 colors.
4-12 Enhancing System Operations