Setup guide

You may want to disable caching in a certain address area to
avoid any memory conflicts if you install an option card or
other device that uses the same address area.
To change the setting of one or more System
Defined
Cache Control Areas, select an address area and press [+I
or I-1 to choose Enabled or Disabled.
To disable caching in one or more User
Defined
non-cached Areas, you set the beginning address of the
range in a low address option; then you set the ending address
in the corresponding high address option.
First hi highlight the low address option and press m Then
press
El
+ or [-I to scroll through h the addresses in 4KB
increments; or press m or
kl
On to scroll in 256KB
increments. (You see the corresponding high address option
setting increase at least 4KB higher than the low address.) Once
you set the low address, set the corresponding high address in
the same manner.
Note
You cannot use these SETUP options to cache any RAM you
may have installed on an option card.
Setting the Cache Test and Use Control Options
Using SETUP, you can enable or disable your computer’s
internal cache (built into the microprocessor). The default
setting for the Internal cache option is Enabled.
You may need to disable the cache if it malfunctions or if you
use timing-loopdependent software that requires a slower
system speed. Check your software documentation to see if this
is necessary.
2-24 Running the SETUP Program