Epson Apex 386SX/16 Canadian Product User Manual - Page 56

Table, Jumper, Settings, Different, Types, Setting, System

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ROM BIOS Chips Jumper W7 is used to select the type of BIOS chips. BIOS stands for Basic Input Output System. BIOS controls the real-time clock, disk drives and the computer's peripheral equipment. Refer to the Figure 2-15 for the location of jumper W7 and BIOS chips. For selection and installation of the ROM BIOS chips, refer to the Table below and Figure on the next page Type of BIOS DTK BIOS or any other of 64KB size Other BIOS of 32KB size Type of ROM chip 27256 x 2 27128 x 2 ROM Configuration Jumper W7 U39 - High byte U40 - Low byte U39 - High byte U40 - Low byte Table 2-4 Jumper Settings for Different Types of BIOS 18 Chapter 2: Setting Up Your System

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ROM
BIOS
Chips
Jumper
W7
is
used
to
select
the
type
of
BIOS
chips.
BIOS
stands
for
Basic
Input
Output
System.
BIOS
controls
the
real-time
clock,
disk
drives
and
the
computer’s
peripheral
equipment.
Refer
to
the
Figure
2-15
for
the
location
of
jumper
W7
and
BIOS
chips.
For
selection
and
installation
of
the
ROM
BIOS
chips,
refer
to
the
Table
below
and
Figure
on
the
next
page
Type
of
ROM
BIOS
Type
of
ROM
chip
Configuration
Jumper
W7
DTK
BIOS
or
any
other
27256 x 2
U39 -
High
byte
of
64KB
size
U40 -
Low
byte
Other
BIOS
of
32KB
size
27128 x 2
U39 -
High
byte
U40 -
Low
byte
Table
2-4
Jumper
Settings
for
Different
Types
of
BIOS
18
Chapter
2:
Setting
Up
Your
System