why vhdl is better than verilog?
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VHDL is more verbose than Verilog and it is also has a non-C like syntax. With VHDL, you have a higher chance of writing more lines of code. ... Verilog has a better grasp on hardware modeling, but has a lower level of programming constructs.
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A VHDL description has two domains: a sequential domain and a concurrent domain. The sequential domain is represented by a process or subprogram that contains sequential statements. These statements are exe- cuted in the order in which they appear within the process or subprogram, as in programming languages.
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For simple gates, TTL will be faster than CMOS. TTL is power hungry, which means that it puts out a lot of heat. If you tried to produce the same level of integration in both technologies, the TTL chip would melt.
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The FPGA is Field Programmable Gate Array. It is a type of device that is widely used in electronic circuits. FPGAs are semiconductor devices which contain programmable logic blocks and interconnection circuits. It can be programmed or reprogrammed to the required functionality after manufacturing.
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Write synthesizable and automatic tasks in Verilog. Tasks are sections of Verilog code that allow the Digital Designer to write more reusable, easier to read code. ... Tasks should be utilized when the same operation is done over and over throughout Verilog code. Rather than rewriting code, one can just call the task.
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VHDL is not a software programming language, rather it describes hardware. Hardware fundamentally works in parallel (for example, two gates will perform their function on their inputs simultaneously), and hence concurrency is built into VHDL.
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Advantages. The key advantage of VHDL, when used for systems design, is that it allows the behavior of the required system to be described (modeled) and verified (simulated) before synthesis tools translate the design into real hardware (gates and wires).
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Block RAM stores large amounts of data while distributed RAM stores small chunks of data across the logic path,so when you are using larger blocks of memory or RAM, Block RAM is faster as compared to distributed RAM otherwise the FPGA blocks will take too time to respond and unnecessary space is taken up by memory.
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The Principles of FPGAs. ... In general terms, FPGAs are programmable silicon chips with a collection of programmable logic blocks surrounded by Input/Output blocks that are put together through programmable interconnect resources to become any kind of digital circuit or system.
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FPGA contains up to 100,000 of tiny logic blocks while CPLD contains only a few blocks of logic that reaches up to a few thousands. 2. In terms of architecture, FPGAs are considered as 'fine-grain' devices while CPLDs are 'coarse-grain'. ... FPGA is a RAM-based digital logic chip while CPLD is EEPROM-based.
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For Verilog HDL modules, a Defparam Statement assigns a value to a parameter that is defined in the parameter declaration in the Module Declaration of the module. You can either assign values to the parameters or use their default values. ... v can pass parameter values directly to middle.
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An advantage of CMOS over NMOS logic is that both low-to-high and high-to-low output transitions are fast since the (PMOS) pull-up transistors have low resistance when switched on, unlike the load resistors in NMOS logic. In addition, the output signal swings the full voltage between the low and high rails.
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Module is basically used for your RTL design while Program block is used for RTL verification. Program block is used as a divider between the dut and the testbench. ... Furthermore to add you will not able to use always in a program block,only initial is permitted while in module you can use both always and initial.
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['Field programmable gate arrays (FPGAs)', 'Complex programmable logic devices (CPLDs)']
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FPGA's have DSP slices to implement signal processing functions. The DSP operation most commonly used is Multiply-Accumulate or MAC operation. A MAC block is also used as a building block for more complex DSP applications like filtering. FPGA DSP slice essentially implements a MAC operation.
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FPGAs are a class of digital chips which have programmable logic. This means that when we power on an FPGA chip it does not perform a specific function. It waits for us to tell it what function it must perform. This is the reason for it being called “programmable”.
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1 Answer. There is absolutely no difference between reg and logic in SystemVerilog except for the way they are spelled - they are keyword synonyms. logic is meant to replace reg because reg was originally intended to be short for register. Also note that logic is a data type for a signal, whereas wire is a signal type.