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Dual-ported RAM (DPRAM), also called dual-port RAM, is a type of random-access memory (RAM) that can be accessed via two different buses.. A simple dual-port RAM may allow only read access through one of the ports and write access through the other, in which case the same memory location cannot be accessed simultaneously through the ports since a write operation modifies the data and therefore ...
Examples include exotic products such as e.g. ArVid, a VHS tape archiver (only some versions of which were FPGA-based) and Gigabyte Technology's i-RAM budget pseudo-SSD drive, which used a Xilinx FPGA. [57] Often a custom-made chip would be cheaper if made in larger quantities, but FPGAs may be chosen to quickly bring a product to market.
Dual-ported video RAM (VRAM) is a dual-ported variant of dynamic RAM (DRAM), which was once commonly used to store the framebuffer in graphics adapters.. Dual-ported RAM allows the CPU to read and write data to memory as if it were a conventional DRAM chip, while adding a second port that reads out data.
Xilinx's tools provides the possibility of running software in simulation, or using a suitable FPGA-board to download and execute on the actual system. Purchasers of Vivado are granted a perpetual license to use MicroBlaze in Xilinx FPGAs with no recurring royalties. The license does not grant the right to use MicroBlaze outside of Xilinx's ...
Xilinx's Embedded Developer's Kit (EDK) supports the embedded PowerPC 405 and 440 cores (in Virtex-II Pro and some Virtex-4 and -5 chips) and the Microblaze core. Xilinx's System Generator for DSP implements DSP designs on Xilinx FPGAs. A freeware version of its EDA software called ISE WebPACK is used with some of its non-high-performance chips.
For FIFOs of non-trivial size, a dual-port SRAM is usually used, where one port is dedicated to writing and the other to reading. The first known FIFO implemented in electronics was by Peter Alfke in 1969 at Fairchild Semiconductor. [4] Alfke was later a director at Xilinx.
PicoBlaze is the designation of a series of three free soft processor cores from Xilinx for use in their FPGA and CPLD products. They are based on an 8-bit RISC architecture and can reach speeds up to 100 MIPS on the Virtex 4 FPGA's family. The processors have an 8-bit address and
Dual core versions supporting both symmetric and asymmetric multiprocessing, up to 1.5 GHz. QorIQ Processing Platforms (evolution of the PowerQUICC ). The first letter of the model indicates the series, the second and the third model number indicates the number of cores (e.g. P5040 has four cores, T4240 has 24 cores)