Advanced Setup; Isa Legacy Resources - IBM Aptiva Hardware Handbook

switch on the power strip. Choose the On/Off setting to
turn the computer on from the on/off button on your
computer.

Advanced Setup

The Advanced Setup feature allows you to enable or
disable cache memory and the ROM (read-only
memory) shadowing of a memory region.
The following paragraphs describe each of these
options.
Cache Control. 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 128K cache memory on
your computer.
Cache memory is special buffer storage that holds
frequently used instructions and data, and works faster
than main storage. With cache memory enabled, your
applications and programs run faster. You can disable
cache memory to slow down your computer.
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.
The ROM Shadowing option may not work on
note: cards that use memory-mapped I/O, such as
network cards.
74 Features of the Configuration/Setup Utility

ISA Legacy Resources

If you are installing an ISA legacy (non-Plug and Play or
non-PCI) adapter card, you can use the ISA Legacy
Resources feature to manually configure the card. This
feature lets you set the following legacy resources
typically required by these adapter cards:
•
Memory resources
•
I/O port resources
•
DMA resources
•
Interrupt resources
The following paragraphs describe each of these
options.
Memory Resources. This option lets you allocate
system memory regions for a legacy adapter card. It lists
the hexadecimal addresses of the available memory
regions. You allocate memory to an adapter card by
choosing the Not Available setting for a particular
hexadecimal address.
Be sure to read the documentation that came with the
adapter card. You may need to make changes to the card
that match the selections you make for Memory
Resources. For example, you may have to move
jumpers or switches on the adapter card, or make
changes to the software that came with the adapter
card.
I/O Port Resources. This option lets you allocate I/O
ports for a legacy adapter card. It lists the hexadecimal
addresses of the available I/O ports. You allocate I/O
Ports to an adapter card by choosing the Not Available
setting for a particular hexadecimal address.