IBM Aptiva Personal Computer
(250-0451A)              Advanced Options             Faxback Doc. # 33172

The Advanced Options feature allows you to set security options for your
computer and to enable or disable the cache memory and the ROM (read-only
memory) shadowing of a memory region.

Security Options.  The Security Option allows you to set or delete a
Power-on password, to enable or disable access to diskette drive(s), and
to tell your computer to operate with or without a keyboard or the
diskette drive(s).  This feature includes the following options:

Power-on Password.  This option allows you to set a Power-on password to
restrict the use of your computer.  If you set a Power-on password, you
must type this password each time your computer is turned on.  If you do
not type the correct password, you cannot use your computer.  You can also
choose to display or not display la password prompt.

Follow the instructions on the screen to set or delete a Power-on
password.  After you type in your password, highlight the option Set or
Change Power-on Password and press Enter.  The Power-on password can be up
to seven characters long (letters, numbers, or both).  Once you create
your password, be sure to write it down and put it in a secure place.

Note:  The Power-on password does not appear on the screen when you
       type it.

Diskette Drive Access.  This option allows you to enable or disable access
to the diskette drive.

Operate without Keyboard.  This option allows you to avoid a POST error
when the keyboard is disconnected.  This option is useful if you use your
computer as a network server.

Operate without Diskette Drive(s).  This option allows you to avoid a
power-on self test (POST) error when the diskette drive is disconnected.
This option is useful if you use your computer as a network server.

Cache Options.  The Cache Control option allows you to enable or disable
Cache memory and shows you the amount of Cache memory installed in your
computer.  You can install a maximum of 512K cache memory on your
computer.

Cache memory is special buffer storage that holds frequently used
instructions and data, and works faster than main storage.

Cache State.  This option allows you to enable or disable the cache
memory in your computer.  With cache memory enabled, your applications and
programs run faster.  You can disable cache memory to slow down your
computer.

Cache System BIOS.  If the Cache State option is enabled, you can enable
this option to improve the performance of your computer's BIOS.  You may
need to disable this option when you are using an application that
attempts to write to the BIOS, such as a virus checking application.

ROM Shadowing.  The ROM Shadowing option stores BIOS in random access
memory (RAM).  RAM works faster than ROM, so your programs will run
faster.

If you install an adapter card that has its own ROM, you can enable the
ROM shadowing option so that your adapter cards will run faster.

Note:  The ROM Shadowing option may not work on cards that use memory-
       mapped I/O, such as network cards.

Upper Memory Boundary.  This option gives you the upper memory boundary
for your computer.  This boundary is the beginning of the computer's BIOS
region that is not available to an upper Memory manager.

Memory Options.  This option allows you to configure your computer to use
Extended Data Out (EDO) memory or standard memory.  EDO memory is faster
than standard memory and will help increase the performance of your
system.  You can configure each memory bank on the system board
separately.

Warning!  Do not choose "EDO" memory if your memory modules are standard.
          If you choose "EDO" and you have standard memory installed, you
          may lose data.

PCI Card Options.  This option allows you to enable or disable PCI Card
Bus Mastering during POST.  Bus Mastering allows installed Bus master PCI
cards to process information without using the microprocessor.

If PCI cards do not operate properly, you may need to disable this
option.


(br/all-06/03/96)

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