ZT5524A1B Intel (CPU), ZT5524A1B Datasheet - Page 72

• Manufacturer Part Number: ZT5524A1B
• Manufacturer: Intel (CPU)

Specifications of ZT5524A1B

• Lead Free Status / RoHS Status: Supplier Unconfirmed

System Registers
System Registers
B.1
B.1.1
72
Table 33. System Register Definitions
Note: This register is reset to 00h on init or reset. The BIOS resides in page 000.
Intel NetStructure
The ZT 5524 / MPCBL5524 provides several system registers to control and monitor a variety of
functions on the ZT 5524 / MPCBL5524. Normally, only the system BIOS uses these registers, but
they are documented here for application use as needed. Take care when modifying the contents of
these registers: the system BIOS may be relying on the state of the bits under their control.
System Register Definitions
The system registers are accessible as follows:
Flash Control (78h)
I/O Address
Default Value
Size
Attribute
78h,
79h,
80h,
E1h,
E2h,
E3h,
E4h,
E5h,
E6h,
E7h,
E8h,
I/O Address
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ZT 5524 / MPCBL5524 High-Performance System Master Processor Board TPS
Flash Control
Watchdog
BIOS POST Codes
ENUM, WD NMI Status, PWR Supply
Status
Board ID
Switch Monitors
Ethernet/Geographic Addressing
Video/LED Control
HCINDEX - Host Control Index
HCDATA - Host Control Function Data
INT- Interrupt Status and Mask Register
Register Name
78h
0x00
8 bits
R/W
Default Value
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
04h
NA
RO, R/W
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
WO
RO
RO
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
Size
B