Specification Update

ManualsBrandsIntel ManualsOtherIntel Celeron Processor 566 MHz, 128K Cache, 66 MHz FSB

MOBILE INTEL

CELERON

PROCESSOR at 466 MHz, 433 MHz, 400 MHz,

366 MHz, 333 MHz, 300 MHz, 266 MHz SPECIFICATION UPDATE

DOCUMENTATION CHANGES

The Documentation Changes listed in this section applies to the following documents:

• P6 Family of Processors Hardware Developer’s Manual

• Intel

Mobile Celeron

Processor in Micro-PGA and BGA Package at 466 MHz, 433 MHz, 400 MHz, 366

MHz, 333 MHz, 300 MHz and 266 MHz datasheet

• Intel

Celeron

Processor Mobile Module: Mobile Module Connector 1 (MMC-1) at 400 MHz, 366 MHz,

333 MHz, 300 MHz, and 266 MHz datasheet

• Intel

Celeron

Processor Mobile Module: Mobile Module Connector 2 (MMC-2) at 400 MHz, 366 MHz,

333 MHz, 300 MHz, and 266 MHz datasheet

• Intel

Mobile Celeron

Processor: Mobile Module MMC-1 at 466 MHz and 433 MHz datasheet

• Intel

Mobile Celeron

Processor: Mobile Module MMC-2 at 466 MHz and 433 MHz datasheet

Note: Documentation changes for IA-32 Intel(R) Architecture Software Developer’s Manual volumes 1, 2, and 3

are posted in a separate document " IA-32 Intel(R) Architecture Software Developer’s Manual Documentation

Changes". This Document has been posted to http://developer.intel.com/.

All Documentation Changes will be incorporated into a future version of the appropriate Intel Celeron processor

documentation.

H1. Mobile Celeron Processor CPUID Section Update

The Mobile Intel

Celeron

Processor in micro-PGA and BGA Packages at 466 MHz, 433 MHz, 400 MHz, 366

MHz, 300 MHz and 266 MHz datasheet (order number 245112-005) has the following Documentation Change.

The datasheet was incorrectly documented as stating the EAX register contained the values after a power-on

RESET. The correct statement is after a power-on RESET, the EDX register contains the processor version

information (type, family, model, stepping).

Section 2.4 Update

The Mobile Celeron processor has the same CPUID family and model number as some Pentium II processors.

The Mobile Celeron processor can be distinguished from these Pentium II processors by looking at the stepping

number and the cache descriptor information. A Mobile Celeron processor has a stepping number in the range

of 0AH to 0CH and an L2 cache descriptor of 041H (128-Kbyte L2 cache). If the L2 cache descriptor is 042H,

then the processor is a Pentium II processor. The L2 cache must be properly initialized for the L2 cache

descriptor information to be correct.

When the CPUID version information is loaded with EAX=01H, the EAX register contain the values shown in

Table 2.4. After a power-on RESET, the EDX register contains the processor version information (type, family,

model, stepping).

See Intel Processor Identification and the CPUID Instruction Application Note AP-485 for further information.