Macros enable you to mark the start and the end of the code sections in your program. However, the FPGA can include additional design logic. In contrast, memory throughput can be the most critical requirement in a complex, high performance system. This design example uses one 20 KB on-chip memory for both data and instructions. You can edit these files and compile and link them with the BSP library file using the makefile. The application project folder contains a create-this-app script , and the BSP project folder contains a create-this-bsp script. You must also download tutorial design files from the Intel web site.
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The example below shows how to access a peripheral register.
Because Platform Designer does not know the software behavior, Platform Designer cannot make educated guesses about the best IRQ assignment.
Custom peripheral alterz accelerator implemented in hardware.
– Intellectual Property : Altera – CFI Flash
Alternatively, you can disable interrupts to avoid context switches during section measurement. However, word and halfword accesses sometimes require byte swapping in software to correctly interpret the data internally by the processor.
The memory is implemented in the FPGA itself; consequently, no external connections are necessary on the circuit board. The software project is flexible: The following sections describe several problems that might occur, and suggest ways to troubleshoot the problems.
Embedded Design Handbook
The exact circumstances under which MPU reconfiguration is required depends on the OS implementation and settings. Your resource options include traditional Intel -based support such as online documentation, training, and My Support, as avalom as web-based forums and Wikis.
The design files accompanying this section include the following example software projects:. The following general types of memories can be used in embedded systems. The BSP project is a collection of C source, header and initialization xltera, and a makefile for building a custom library for the hardware in the system.
Embedded Design Handbook
Dynamically addressable slave interfaces have the added benefit of being accessible by masters of any data width without data truncation or side effects. For example, in a mixed team environment in which a hardware engineering team creates new versions of the hardware, independent of the software engineering team, the potential for using the incorrect version of the software on a particular version of the system hardware is high.
Configure a performance counter to have only one section counter to save the most resources. As you add each hardware component to the system, test it with software.
If your system consists primarily of components provided by Intelit is much easier to make the remainder of your system use the same little endian arithmetic byte ordering. Use this command to copy from one binary object format to another, optionally changing the binary data in the process. When a narrow master accesses a wide slave, the interconnect performs byte lane realignment to ensure that the master accesses the appropriate byte lanes of the slave.
The software examples in each subdirectory are identical.
For example, a bit PowerPC core labels the bus data bits 0 up to Many embedded systems use flash memory as a low power, high reliability substitute for a hard drive. Designing with SRAM memories presents both advantages and disadvantages. You may wish to modify the behavior of the exception handler to increase overall performance.
Efficient memory use increases the performance of FPGA-based embedded systems. To perform these steps, you must have the.
The memory throughput values appear in the command terminal as the memory is tested. The resource usage of the performance counter component is nearly identical on all devices. This bus byte ordering is a little endian ordering.
The RAM test controller also ensures that the pattern reader never overtakes the pattern writer with respect to the memory locations it is testing, otherwise data corruption occurs.
This fabric provides many convenience and performance-enhancing features. Adding instructions to each function call for use by the GNU profiler affects the behavior of the code in the following ways:. You use these scripts to set up and run memory flahs on the development board projects.
Use these tools to create a portable, self-contained makefile-based project that can be easily modified later to suit your build flow. The code fragment shown in the example generates all seven of the accesses described in the table in the order presented in the table, where BASE is a location in memory aligned to a four-byte boundary.