Epson 7500 - Manual (Page 41)

Checking System Memory
Your computer comes with 4MB of random access memory.
MS-DOS and application programs that run under MS-DOS use
the first 640KB of memory. You can use the memory above
1MB as extended or expanded memory.
Expanded memory can be used by application programs
conforming to the Lotus® / Intel® /Microsoft Expanded Memory
Specification (LIM EMS). Your computer is compatible with
version 4.0 of the LIM EMS.
The Memory portion of the SETUP program’s first screen
displays the total memory available and the amount of memory
contained in each of the following:
Base memory
Extended memory
Expanded memory
Reserved memory between 640KB and 1MB.
Setting the Booting Sequence
The booting sequence determines the order in which the
computer checks the drives when it looks for the operating
system.
For example, if you select
A, C,
each time you turn on the
computer it checks drive A for an operating system diskette
and loads the operating system from that diskette. If drive A
does not contain an operating system diskette, the computer
loads the operating system from drive C. This is the default
setting because you may sometimes want to boot the computer
from a system diskette in drive A.
Running the SETUP Program 2-15