5 PPCBug

Physically, PPCBug is contained in two on-board flash devices that together provide 32MB of storage. The executable code is checksummed at every power-on or reset firmware entry, and the result (which includes a precalculated checksum contained in the flash devices), is verified against the expected checksum.

MPU, Hardware, and Firmware Initialization

The debugger performs the MPU, hardware, and firmware initialization process. This process occurs each time the PrPMC800/800ET is reset or powered up. The steps below are a high- level outline; not all of the detailed steps are listed.

1.Sets MPU.MSR to known value.

2.Invalidates the MPU’s data/instruction caches.

3.Clears all segment registers of the MPU.

4.Clears all block address translation registers of the MPU.

5.Initializes the MPU-bus-to-PCI-bus bridge device.

6.Calculates the external bus clock speed of the MPU.

7.Delays for 750 milliseconds.

8.Determines the CPU base board type.

9.Sizes the local read/write memory (i.e., DRAM).

10.Initializes the read/write memory controller. Sets base address of memory to $00000000.

11.Retrieves the speed of read/write memory.

12.Initializes the read/write memory controller with the speed of read/write memory.

13.Retrieves the speed of read only memory (flash).

14.Initializes the read only memory controller with the speed of read only memory.

15.Enables the MPU’s instruction cache.

16. Copies the MPU’s exception vector table from $FFF00000 to $00000000.

17.Verifies MPU type.

18.Enables the superscalar feature of the MPU (superscalar processor boards only).

19.Verifies the external bus clock speed of the MPU.

20.Determines the debugger’s console/host ports, and initializes the PC16550A.

21.Displays the debugger’s copyright message.

22.Displays any hardware initialization errors that may have occurred.

23.Checksums the debugger object, and displays a warning message if the checksum failed to verify.

24.Displays the amount of local read/write memory found.

PrPMC800/800ET Processor PMC Module Installation and Use (PrPMC800A/IH5)

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Motorola PrPMC800/800ET Processor PMC Module, PRPMC800A/IH5 manual MPU, Hardware, and Firmware Initialization

PRPMC800A/IH5, PrPMC800/800ET Processor PMC Module specifications

The Motorola PrPMC800/800ET Processor PMC Module, specifically the PRPMC800A/IH5 variant, represents a significant advancement in embedded processing technology. Often utilized in telecommunications, aerospace, and defense applications, this PMC module is designed to provide robust performance in demanding environments, making it suitable for high-speed data processing and communication tasks.

At the core of the PrPMC800 module is the PowerPC 750 architecture, known for its efficiency and power management capabilities. This 32-bit RISC processor is clocked at speeds reaching up to 800 MHz, allowing it to handle complex computations and multitasking scenarios effectively. The processor architecture supports a variety of software environments, including real-time operating systems and VxWorks, which enhances its adaptability across diverse applications.

One of the standout features of the PRPMC800A/IH5 module is its memory capacity. The module supports up to 1 GB of SDRAM, offering ample space for processing large datasets and executing multiple applications simultaneously. Furthermore, the integrated PCI bus facilitates high-speed connectivity with other modules and components in the system, ensuring rapid data transfer rates essential for real-time processing tasks.

An important characteristic of the PrPMC800 module is its thermal and environmental resilience. Designed with military-grade standards, it operates reliably in extreme conditions, including high temperatures and vibrations. This makes it particularly suitable for rugged applications where standard commercial-grade processors may fail.

The module also incorporates advanced I/O capabilities, featuring dual Gigabit Ethernet ports which enhance networking performance. Additional serial ports and interrupt handling further improve the module's versatility, allowing it to interface seamlessly with various peripheral devices and systems.

In summary, the Motorola PrPMC800/800ET Processor PMC Module, represented by the PRPMC800A/IH5 model, is an exemplary solution for applications requiring high performance, reliability, and adaptability. With its powerful PowerPC architecture, generous memory capacity, robust I/O capabilities, and proven ruggedness, this processor module stands out as a preferred choice for engineers and developers working in critical industries.