Siemens SIMATIC PG 760 Manual page 66

Option "Memory The following submenu appears when you select the option "Memory cache"
Cache"
in the main menu:
Figure 5-4 "Memory Cache" Submenu
A cache is a fast intermediate memory located between the CPU and the
main memory (DRAM). Repeated memory access operations are executed in
the fast cache, and not in the main memory, provided the feature is enabled.
It may be necessary to disable the cache with certain hardware and software
because intentional program runtimes or delay times are prevented by the fast
cache.
PG 760 Programming Device
C79000-G7076-C761-01
PhoenixBIOS Setup-Copyright 1985-95 Phoenix Technologies Ltd.
Main Advanced Security
Memory Cache
Cache: [Enabled]
Cache System BIOS area: [Enabled]
Cache Video BIOS area: [Enabled]
F1 Help Select Item + / –
ESC Exit Select Menu Enter Select
Configuring the PG 760
Power Exit
Item Specific Help
Cache Controls. If Diasabled is
selected, then both internal
and external Cache are
disabled. If set to Enabled,
then internal Cache and
optionaly external Cache are
enabled. System and Video
BIOS Cache settings have no
effect, if this item is set to
Disabled.
Change Values F9 Setup Defaults
Sub-Menu F10 Previous Values
5
5-9