Questions tagged [processor]
The processor tag has no usage guidance.
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Why don't we see an MMU on a high-end MCU?
In the past, microcontrollers were fairly simple and had poor performance, making the idea of running a full OS on them not viable.
Today, there are multi-core MCUs running at over 500 MHz (e.g. ...
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Replacing a keypad on DYMO LetraTag
I'm rebuilding my label printer to become an Internet service using an ESP8266. It's a fun project, never mind the usefulness. The keypad will be removed and instead my MCU emulates keypresses.
The ...
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10gbase-kr autonegociation and ICs
My goal is to propose building a 3U VPX card which connects to a backplane. After some research, the preferred connection between cards is over 10gbase-kr (although SGMII is supported in some ...
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maximum memory supported by processor - why often stated less than 1TB?
I want to understand technical details of limitations of maximum memory size a system / processor can support. Below what I was able to find via web search to date Wiki:
Modern 64-bit processors such ...
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Are coarse-grained reconfigurable architectures a subset of dataflow architecture?
By definition, dataflow architectures consist of large modules in the dataflow path, such as adders and multipliers for integer, floating-point, or fixed-point computation.
Hence, are coarse-grained ...
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Why Intel does not make 5nm chips buying UV machines from ASML? [closed]
I've recently found out (correct me if I'm wrong here), that 5nm lithograthy machines are made by ASML, which is independent and Intel invested in it. I've tried web searches but I still do not ...
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How many instructions can a vector processor issue per cycle? [closed]
I currently have vector processors in class and wondered whether a vector processor only issues one (vector) instruction per cycle (in order processor). Maybe this question is stupid and it depends ...
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What are the factors that determine the clock speed of a processor?
What are the factors that determine the clock speed of a processor? Since the speed of electricity is the same for all processors then I assume that how fast the binary data is transmitted to ...
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Question about PID control loop timing
For my project I am creating a RISC processing architecture on an FPGA that can perform various basic instructions like adding, multiplying, subtracting, storing and fetching from memory etc. To prove ...
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Help in understanding Store Word (SW) instruction in Risc-V
So this is what I understood from what my professor said, but I don't think it's the right answer. What am I doing wrong? I'm sure It's just some small thing that I'm getting mixed up.
Given ...
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What is throughput as far as processors are concerned?
My teacher showed some algothrims, RR, FCFS and others. In the end he exposed a table with throughput of the algorithms. He explained what thoughput is but he failed miserably. He first said that ...
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How can I modify single-cycle MIPS processor to implement jal command?
Hello Stack exchange community
I was wondering which modification should I have to make in order to enable single-cycle MIPS processor to run a jal(jump and link) command?
My most pressing confusion ...
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Number of read and write ports on L2 and L3 cache
I have an Intel Core i9-9900K processor (some specs here) and I'm trying to figure out how many read and write ports each level of cache has, for a personal project. I cannot find this in any online ...
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How are transistors on processor chips designed to withstand high operating temperatures?
The process for transistors grow smaller every few years, and operating temperatures reach around 100 degree Celsius. This makes one wonder as to how these tiny designs are able to hold up within ...
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What processor architecture is in a 230GMULps KPU design?
While AI products are becoming popular recently, when looking at the "Seeed Studio Grove AI HAT for Edge Computing Artificial Intelligence Board" it mentions a RISC-V, a 230GMULps 16-bit KPU ...
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confusion understanding a processor?
As shown highlighted in attached photo,In case of 6713 dsp,during each clock cycle, up to eight instructions can be carried out in parallel
Does this happen in case of every processor that multiple ...
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Single Cycle Data-path Requirements
How having separate instruction and data memories helps in implementing a single cycle data-path for mips instruction set? i want to know why we can only use data-path element once in a cycle for ...
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Effect of doubling clock frequency on computer performance
If we double the clock frequency of a CPU, does that translate to a doubling of the CPU performance? Assuming that the number of instructions and CPI are constant, we have an inverse relationship ...
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Where are registers and what do they look like?
I racked my brain through my comp-arch class and reread wiki’s article on hardware registers (they’re flip-flops, I get that), but one year later and I still don’t understand what a register ...
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Does stage Sy of instruction have to wait till all earlier instructions has executed their corresponding stage
I am trying to understand execution of instruction in RISC pipeline.
Can stage Sy of instruction I2 execute before stage Sy of I1? That is, in below example, will it be allowed to run I2's ID in C3 as ...
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How do I procure SoCs in small quantities? [closed]
I want to design an SBC but I am having difficulty with buying the SoC. I'm thinking of Snapdragon, Mediatek, Allwinner, Amlogic and Rockchip (These are the ones I know, if you know others I would ...
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royalty free embedded processor [closed]
I got into FPGA design last year for a project, and had some success with a Xilinx Spartan 6 dev board using ISE. I could do everything with this low cost board and ISE 14, which is free. I needed an ...
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Data Bus and High Impedance
Let's consider an interface between a simple microprocessor and a certain memory. For instance, let's assume that the microprocessor drives the address bus, a read signal, a write signal, and that the ...
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Need a processor to be able to turn off its own power
I have a processor that is powered by a mains 5V power from a wall adapter, and has a short term battery backup.
I need the processor to turn on automatically and immediately when 5V mains supply is ...
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Data transfer from/to memory [closed]
Consider an interface (between a memory and a processor, or between a memory and an ASIC, or similar situations) in which there is a data bus of 8 bit. Suppose I want read a 16 bit data from memory, ...
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Understanding branch delay slot and branch prediction prefetch in instruction pipelining
Let me define:
Branch delay slot: Typically assemblers reorder instructions to move some instructions immediately after branch instruction, such that the moved instruction will always be executed, ...
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Finding percentage memory utilization in pipelining architecture
I was solving problems from the exercise of the book "Computer Organization and Design" by Patterson. The problem reads like this:
Consider stage latencies:
...
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Why cant we increase chip area?
According to Moore's law, transistors are getting double every 24 months. But now, we have reached the transistor size limit which results in leakage current. Then why can't we increase chip area size,...
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How many stall cycles resulted by incorrectly predicted branch in instruction pipelining
I have been solving following exercise problem from book Computer Organization by Patterson and Hennessy:
The importance of having a good branch predictor depends on how often conditional branches ...
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Have separate instructions for each register or pass register as argument?
I am trying to design a (very) simple processor architecture. I am in the process of creating a basic instruction set for it, however I am not sure of the best ("best" meaning what most people use - ...
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Analog Blackfin Processor Silicon Revision issue [closed]
Recently we got a large batch of ADSP-BF5346s that say they are Silicon Rev 3 but internally read as Rev 2. Is there a way for me to determine the Silicon Revision number on the rest of the shipment ...
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Verilog) Multi-source in Unit <> on signal <>; this signal is connected to multiple drivers
Hi I'm trying to design a multiprocessor in Verilog.
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Inside a CPU, what happens in a single clock cycle?
In grossly simplified terms, a processor calculates 1 instruction in a single clock cycle. But what does that even mean? If a processor is a bunch of transistors, is 1 clock cycle simply 1 state ...
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In a CPU, does the speed of a calculation affect the heat generated?
Take as an example a CPU that is capable of changing its clock speed, like a modern computer CPU (Intel, AMD, whatever). When it does a certain calculation at a particular clock speed, does it ...
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Computer architecture why is MemRead used?
Why is a control signal MemRead needed for the Data Memory element if whenever the output Read Data is not desired it will be multiplexed out via MemtoReg?
Wouldn't having MemRead always enabled ...
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What is the best way to implement spi using 8085? [closed]
I have to make a compass using 8085. I have to take serial data from magnetometer of mpu9250. Should i prefer bit banging to implement spi or make parallel out and parallel in hardware using shift ...
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Finding specifications for digital signal processors (DSPs) for given audio application [closed]
I'm finding difficulties choosing an adequate processor solution for my application from my null experience with DSP:
8ch 24-bit @11025Hz I2S TDM Input
Beamforming + ASNR
MSS Multi-source selection
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Is a hardware register the same as a processor register?
I have tried searching for the difference between these two terms but everything I find gives ambiguous results. What is the difference between a harware register and a processor register, if there is ...
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Lpc 43s50FET256 processor and its connections
ı want to buy a nxp LPC43S50FET256 processor and ı made some research but I dont know whether lpc43s50 has already got bridge connections, ı also dont know for example whether ethernet is already ...
user158660
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Finding percentage accuracy of instruction pipeline branch predictor
I need help in understanding the solution from solution manual. The question is from the exercise 4.24.4 and 4.24.5 of chapter 4 in the book Computer Organization and Design by Patterson and Hannessey ...
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Understanding execution of sequence of pipeline instructions
I need help in understanding the solution from solution manual. The question is from the exercise 4.22.2 of chapter 4 in the book Computer Organization and Design by Patterson and Hannessey (4th ...
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Understanding instruction branching
I need help in understanding the solution from solution manual. The question is from the exercise 4.22.1 of chapter 4 in the book Computer Organization and Design by Patterson and Hannessey (4th ...
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Methods to detect errors in cache
Are there methods apart from ECC, to detect and possibly correct cache errors?
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Understanding instruction pipelining speedup calculation
I was solving the exercise problem 4.17.6 of chapter 4 in the book Computer Organization and Design by Patterson and Hannessey (4th edition):
Percentage occurrences of the instructions are as ...
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Understanding processor instruction pipeline problem solution
I need help in understanding the solution from solution manual.
The question is from the exercise 4.13.5 of chapter 4 in the book Computer Organization and Design by Patterson and Hannessey (4th ...
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USB RF Videotransmission, is it possible? [closed]
I am thinking about building my next rc plane complete from scratch. I wanted to do the programming by myself, so I have the problem, that I can't use any 5.8Ghz video transmitter because I can't ...
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How does VCO in PLL in computer processor work?
In todays personal computers and notebooks, what is usually used as a Voltage-Controlled Oscillator for generating clock signal for processor?
Is that a crystal rather than RC circuit?
Is it tuned by ...
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How calculator's processor works in a base manner? [closed]
For example, when we click the "3" number button or "+" button, what it sends to processor ? I want an answer something like = " It come first MAR, then goes to Memory, then comes ALU " in this manner ...
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Do multi-core processors reduce power consumption?
I have been reading some tutorials about power consumption on parallelized system. I have been following this tutorial.
Tim Mattson (Intel): Introduction to OpenMP: 02 part 1 Module 1, YouTube
At ...
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Multi-core processor and Real Time [closed]
Is it a good idea to design a real time system on a multicore processor? Task's execution time isn't determinist in these kind of processor because of core management. This makes scheduler's ...
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