Debug Features, Bus Functional Model BFM | Intel 440GX specification

Debug Recommendations

Contact your local Intel Field Sales representative to complete the proper software license agreement and non-disclosure agreement required to receive the ITP.

4.2.3Bus Functional Model (BFM)

A bus functional model for the Intel® Pentium® II processor system bus is available from third party vendors and requires a special non-disclosure agreement. Contact your local Intel Field Sales representative for information on the bus functional model vendors and to complete the appropriate non-disclosure agreements.

4.2.4I/O Buffer Models

IBIS Models are available from Intel for:

•Intel® Pentium® II processor (QUAD only, IBIS models TBD)

•82443GX IBIS Models

•PIIX4E PCI ISA IDE Xcelerator IBIS Models

Contact your local Intel Field Sales representative for a copy of these models and to complete the appropriate non-disclosure agreements.

4.2.5FLOTHERM* Model

A FLOTHERM* Model is available for the Intel® Pentium® II processor.

4.3Debug Features

These suggestions are for debug purposes only on initial prototype systems, and are not required for production level systems. Some of these features may be desirable test functions that you may incorporate onto production boards.

4.3.1Intel® Pentium® II Processor LAI Issue

Note: If the LAI562 tool is not being used, this issue can be ignored. However, be aware that if you send a system to Intel for debug, the absence of the required workarounds will prohibit debugassistance from Intel.

To maintain backward compatibility with Intel® Pentium® II processor, Intel suggests the following circuitry to be considered. The LAI562 integration tool has been designed such that an extra load will be presented on the CMOS signals connected to the Slot 1 connector. The following list of signals are affected:

PREQ#, TCK, TDI, TDO, TMS, TRST#, INIT#, FLUSH#, STPCLK#, PICCLK, PICD[1:0]#, LINT[0]/INTR, LINT[1]/NMI, IERR#, SMI#, PWRGOOD, THERMTRIP#, SLP#, FERR#, IGNNE# and A20M#.

Figure 4-1describes the CMOS probe signals of the LAI562.

Intel®440GX AGPset Design Guide

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440GX specifications

The Intel 440GX chipset was launched in 1997 as part of Intel's series of chipsets known as the 440 family, and it served as a critical component for various Pentium II and Pentium III-based motherboard architectures. Specifically designed for the second generation of Intel’s processors, the 440GX delivered enhanced performance and supported a range of important technologies that defined PC architectures of its time.

One of the main features of the Intel 440GX was its support for a 100 MHz front-side bus (FSB), which significantly improved data transfer rates between the CPU and the memory subsystem. This advancement allowed the 440GX to accommodate both the original Pentium II processors as well as the later Pentium III chips, providing compatibility and flexibility for system builders and consumers alike.

The 440GX chipset included an integrated AGP (Accelerated Graphics Port) controller, which supported AGP 2x speeds. This enabled high-performance graphics cards to be utilized effectively, delivering many enhanced graphics capabilities for gaming and multimedia applications. The AGP interface was crucial at the time as it offered a dedicated pathway for graphics data, increasing bandwidth compared to traditional PCI slots.

In terms of memory support, the 440GX could address up to 512 MB of SDRAM, allowing systems built with this chipset to run comfortably with sufficient memory for the era’s demanding applications. The memory controller was capable of supporting both single and double-sided DIMMs, which provided versatility in memory configuration for system builders.

Another notable feature of the Intel 440GX was its support for multi-processor configurations through its Dual Processors support feature. This allowed enterprise and workstation computers to leverage the performance advantages of multiple CPUs, making the chipset suitable for business and professional environments where multitasking and high-performance computing were essential.

On the connectivity front, the chipset supported up to six PCI slots, enhancing peripheral device integration and expansion capabilities. It also included integrated IDE controllers, facilitating connections for hard drives and CD-ROM devices.

Overall, the Intel 440GX chipset represented a balanced combination of performance, flexibility, and technology advancements for its time. Its introduction helped establish a foundation for subsequent advancements in PC technology and set the stage for more powerful computing systems in the years to come.

Intel 440GX manual Debug Features, Bus Functional Model BFM, 4 I/O Buffer Models, FLOTHERM* Model

Models: 440GX