Intel
®
NetStructure
TM
ZT 5515 Compute Processor Board Technical Product Specification
81
System Registers
C.1.6
Geographic Addressing (E4h)
Table 41. Switch Monitors (E3h)
Bit
Description
7
Flash Write-Protect Status
This bit corresponds to the status of switch SW2-1 (see
page 31
). A logical 0 means that the flash
is write-protected by SW2-1; a logical 1 means the flash is not write-protected by SW2-1.
6
System Enable
This bit corresponds to the status of SYSEN. A logical 1 indicates that the ZT 5515 is plugged into
a system slot. A logical 0 indicates that the ZT 5515 is plugged into a peripheral slot.
5
Boot source selection
This bit indicates the switch setting of boot block page selection.
0 = Protected page (Top page)
1 = Top page - 1
4
Manufacturing Mode
This bit is used during production testing to load a default CMOS image. A logical 1 indicates
manufacturing mode. A logical 0 indicates non-manufacturing mode.
3
Reserved
2
Console Redirection Enable
This bit reads the status of switch SW4-3 (see
page 33
). A logical 0 means that SW4-3 is open and
console redirection is not enabled. A logical 1 means SW4-3 is closed and console redirection is
enabled. Refer to the “Console Redirection” chapter in the Intel NetStructure Embedded BIOS
Manual before attempting to use this feature.
1:0
Software Configuration
These bits are used to provide configuration information to the user's software by monitoring the
status of the Software Configuration SW4 (see page
page 33
) segments listed below. An open
switch reads back a 0; a closed switch reads back a 1. The bits correspond to switch segments as
follows:
Bit 0 = SW4-1; Bit 1 = SW4-2; Bit 2 = SW4-3
Address Offset:
E4h
Default Value:
0x00
Size:
8 bits
Attribute:
RO
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