MON960 Support for IQ80960RM/RN

5.4.2.12sysSetPCIIrq

The PCI Interrupt routing fabric on the IQ80960RM/RN platform is not reconfigurable (fixed mapping relationships); therefore, this function is not supported.

Calling convention:

int sysSetPCIIrq (

int

int_pin,

int

irq_num,

int

bus_dev

);

 

Return values:

 

This function always returns FUNC_NOT_SUPPORTED.

5.4.3Additional MON960 Commands

The following commands have been added to the UI interface of MON960 to support the IQ80960RM/RN platform.

5.4.3.1print_pci Utility

A print_pci command to MON960 is accessed through the MON960 command prompt. This command displays the contents of the PCI configuration space on a selected adapter on the secondary PCI interface or on the i960 RM/RN I/O processor itself. For more information on the meaning of the fields in PCI configuration space, refer to the PCI Local Bus Specification Revision 2.1. The syntax of this command is:

pp <bus number> <device number> <function number>

5.5Diagnostics / Example Code

IQ80960RM/RN platform diagnostic routines serve a twofold purpose: to verify proper hardware operation and to provide example code for users who need similar functions in their applications. Diagnostic routines fall into two categories: board level diagnostics and PCI expansion module diagnostics.

5.5.1Board Level Diagnostics

Board level diagnostics exercise all basic areas of the IQ80960RM/RN platform. Diagnostic routines include SDRAM tests, UART tests, LED tests, internal timer tests, I2C bus tests, and primary PCI bus tests. Primary PCI bus tests exercise the primary ATU, the PCI Doorbell unit, and the PCI DMA controller. Interrupts from both local and PCI sources are generated and handled. The PCI bus tests require an external test suite running on a PC to verify complete functionality of the IQ80960RM/RN platform.

5.5.2Secondary PCI Diagnostics

Secondary PCI diagnostics exercise the secondary PCI bus, thereby confirming hardware functionality, as well as illustrating the use of the PCI BIOS routines present in MON960.

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IQ80960RM/RN Evaluation Board Manual

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Intel RN manual Diagnostics / Example Code, Additional MON960 Commands, Board Level Diagnostics, Secondary PCI Diagnostics

RN, IQ80960RM specifications

The Intel IQ80960RM and RN are part of the Intel i960 family of microprocessors, which were specifically designed for embedded applications in real-time computing environments. Introduced in the early 1990s, these processors were aimed at providing high-performance processing capabilities in industrial, telecommunications, and military systems.

One of the key features of the IQ80960RM and RN is their ability to support a 32-bit architecture, delivering a significant performance advantage over 16-bit and earlier processors. This architecture enables the execution of complex algorithms and the management of large amounts of data, making these microprocessors suitable for demanding applications.

The i960 family is built around a superscalar architecture, allowing multiple instructions to be completed in a single clock cycle. This is achieved through advanced instruction pipelining, which significantly boosts throughput and overall computational speed. The IQ80960RM and RN also included features like branch prediction and out-of-order execution, enhancing efficiency and reducing latency in real-time applications.

Memory management capabilities are another strong point of the IQ80960RM and RN. They support both virtual and physical memory addressing, enabling sophisticated memory management strategies. Their integrated memory management unit (MMU) allows for easier and more effective memory allocation, critical for real-time operating systems that require precise timing and resource management.

Furthermore, these processors are designed with an extensive instruction set architecture (ISA), which supports a wide range of operations, including digital signal processing (DSP) tasks. This versatility allows them to be utilized in various applications, from automotive systems to robotics, where reliable performance is paramount.

The thermal performance and power efficiency of the IQ80960RM and RN has also been a notable characteristic. With operational capabilities across various temperature ranges, these chips are well-suited for harsh environments often found in industrial settings.

In terms of connectivity, the IQ80960 series supports multiple I/O interfaces and communication protocols, ensuring that they can integrate seamlessly with other components and systems. This flexibility enhances their usability in networked applications, particularly in embedded systems.

Overall, the Intel IQ80960RM and RN processors represent a significant step forward in embedded processor technology, characterized by their robust performance, advanced features, and ability to meet the stringent demands of real-time applications across various industries.