ADLINK Express-LPC - Manual (Page 39)

Page 39 Express-IA533 User’s Manual Page 39 Express-IA533 User’s Manual Express-LPC User’s Manual Page 39
8.3.1 CPU Configuration
CPU Configuration Settings
You can use this screen to select options for the CPU Configuration Settings. Use the up and
down < Arrow > keys to select an item. Use the < + > and < - > keys to change the value of
the selected option. A description of the selected item appears on the right side of the screen.
The settings are described on the following pages. An example of the CPU Configuration screen
is shown below.
Max CPUID Value Limit
When the computer is boots, the operating system executes its CPUID instruction to identify the
processor and its capabilities. Before it can do so, it must first query the processor to find out the
highest input value the CPUID recognizes. This determines the kind of basic information CPUID
can provide the operating system. This option allows you to circumvent problems with older
operating systems.
When Enabled, the processor will limit the maximum CPUID input value to 03h when queried,
even if the processor supports a higher CPUID input value. When Disabled, the processor will
return the actual maximum CPUID input value of the processor when queried.