assignmentutor-lab™ 为您的留学生涯保驾护航 在代写计算机系统结构Computer Systems Architecture方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写计算机系统结构Computer Systems Architecture方面经验极为丰富，各种代写计算机系统结构Computer Systems Architecture相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 电子工程代写|计算机系统结构代写Computer Systems Architecture代考|The Lipsi Design

Lipsi is an 8-bit processor organized as an accumulator machine and has been designed and optimized around FPGA specific block RAMs. The focus of the design is to use just a single block RAM.

Different FPGA families contain differently organized and differently sized on-chip memories, which are also called block RAMs. The current minimum block RAM ${ }^{2}$ is 4096 bits (or 512 bytes) large and has an independent read and write port. Lipsi is an 8-bit processor in its purest form. Therefore, we can use 256 bytes from that memory as instructions and 256 bytes for register and data. We use the lower half of the memory for the program, as the address register powers up at zero to fetch the first instruction.

Using a single block RAM for instructions and data means that this memory is time shared between instruction fetch and data read. Therefore, Lipsi is a sequential and not a pipelined architecture.

Most instructions execute in two clock cycles: one for instruction fetch and one for data access and ALU operation. As on-chip memories in FPGAs usually have independent read and write ports, a store instruction can execute in a single cycle.

Most instructions are single byte. Only immediate and branch instructions contain a second byte for the immediate value or the branch target.

## 电子工程代写|计算机系统结构代写Computer Systems Architecture代考|The Instruction Set

The instruction set of Lipsi includes ALU instructions with register and immediate operands, accumulator store, register indirect load and store, unconditional and conditional branch, branch and link for function call, and shift operations. Instruction length is one or two bytes.

Table 1 shows all instructions of Lipsi and their encoding. A represents the accumulator, $f$ an ALU function, PC the program counter, $\mathrm{m}[]$ the memory, I a reegister number in thẻ range of 0 to 15 , n an immédiate constant, a an 8-bit address, and In an input/output device. As Lipsi is an accumulator machine, all operations (except unconditional branch) involve the accumulator register A. Furthermore, we use the notion of additional registers, which are the first 16 bytes in the data memory. Lipsi implements ALU operations with those registers and with immediate values. The accumulator A can be stored in any one of the registers. Memory load and store operations are implemented as register indirect. Those operations need three memory accesses: fetch the instruction, read the register content for the address, and finally load from memory into A or a store $\mathrm{A}$ in the memory. Register indirect load executes therefore in 3 clock cycles and an indirect store in 2 clock cycles.

Table 2 lists all ALU operations, including addition, subtraction, and logic operations. For an 8-bit architecture it is also useful to support addition with carry and subtraction with borrow for arithmetic on larger numbers. With careful coding these additional operations are almost for free (by adding one lower bit to the adder, setting one input to 1 and using the carry flag as second input). Furthermore, current FPGAs have an dedicated Xor gate in front of the LUT, so that an adder can also be used as subtractor (when using the additional input bit as well.).

Furthermore, three logic operations and a bypass operation for a load instruction are available. Again, we could be very minimalistic to support only a single inverting logic function, such as nand. However, implementation of these base operations is very cheap in an FPGA.

# 计算机系统结构代考

## 电子工程代写|计算机系统结构代写Computer Systems Architecture代考|The Lipsi Design

Lipsi 是一个 8 位处理器，组织为一个累加器机器，并且围绕 FPGA 特定的块 RAM 进行了设计和优化。设计的重点是仅使用单个块 RAM。

## 电子工程代写|计算机系统结构代写Computer Systems Architecture代考|The Instruction Set

Lipsi 的指令集包括带有寄存器和立即操作数的 ALU 指令、累加器存储、寄存器间接加载和存储、无条件和条件分支、函数调用的分支和链接以及移位操作。指令长度为一或两个字节。

## 有限元方法代写

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。

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