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69 Threads found on Bit Rom
Hi I'm looking for a pre-built x86 board with the following rough specs: x86 - i3 ish level of processing inc Floating point (32 bit is fine) low power (board powered via USB) ram up to 64MB flash or rom for application on boot up. 2x USB 1 for input other for output dedicated capable of running forth ideally or linux if I must programmable via w
Start with a complete problem description. What's the intended function of the ALU, input and output signals, etc. The VHDL snippet gives an idea of the function, but the data width isn't specified. How's the 32x4-bit RAM related to it? Initializing a RAM with a mif file suggests that you want to use it as rom rather than RAM.
size of rom WIDTH in 8051 vs PIC18 vs AVR does the rom width changes from mcu to mcu?? i heared that pic18F has 16bit wide rom is it true
bit errors make the rom defective. Checksum signatures make the contents more reliable. Each host may use a unique location for this computation and location so OEM specific drivers are used. In the old days it was the Data I/O programmer paid updates for different chip types.
Hi, before going with full architecture level of SRAM, first do bitCELL analysis, and SENSE Amp analysis. they both will help you to understand how memory works , then you can move to timing,power area for SRAM . IN bit CELL analysis you need to do 1) SNM ( Static noise margin -read disturbance margin) 2) write margin 3)Ion 4)Ioff 5) I
I face the following problem. When my altera FPGA power up, the i/o pins have out logic high (voltage level 3 volts), then after the bit file is loaded from the EPCS rom, the pins will have the required values according to the operation. This affects the system that is controlled by the FPGA because some controls should not be high at the (...)
Hi Everyone, I wanna describe a RAM and rom in VHDL and am not really getting what to do, so I will really appreciate if someone can help me. Memory 8-bit Addressable Memory, i.e. 8-bit wide Address Bus; 4-bit Data-In-Bus; 4-bit Data-Out-Bus; One Program Memory Address Space implemented using an (...)
Hi, I have used MATLAB to generate a linear frequency modulated waveform, quantize it as signed 16 bit and write it into a . MIF file: for i = 1:N fprintf(fid_50,'%i : %i;\n',i-1,(Chirp50_n(i))); fprintf(fid_200,'%i : %i;\n',i-1,(Chirp200_n(i))); end So I have a two . MIF files displaying this data . They look
The professor is suggesting you convert a jpg image into the equivalent image that you will display on the DE0, though I suspect you would be better off using some sort of bit mapped graphics image as it would translate easier to a rom.
There is not much that you can do but ask yourself some questions. Are you asking the processor to do too much? Have you coded the task efficiently, you neeed to code for size in this instance. I prefer to code in assembler for these PICs rather than use a C compiler, I have not had good experiences with the 8 bit compilers in the past, they have g
1): fed the input address (input from the top wrapper) to the two rom. 2): decode the highest bit (bit of input address), along with input rom_ce to generate rom_ce_0 and rom_ce_1. 3): According to the rom read command to dout cycle delay, delay the (...)
Hello, I am trying to build a simple form of single bit rom (core rope memory) for illustration purposes.Before proceeding with the design, I am making some tests on a transformer. The picture shows a pulse comming out of a 555 timer, into one turn on the primary. The secondary is connected to an oscilloscope. Every time a pulse occurs on th
Hello everyone, Address bus of 8051 is 16 bit wide which can address 64kB of memory, and some manufacturers provide a 64kB of rom and 1792B of RAM. With only 16 bit address bus how is it possible to access 64kB of rom+ some amount of RAM. Please correct if I am wrong. Thank you.
With suitable wrapping (e.g. placed in a clock synchronous process) a HDL compiler will probably accept the code as rom description. You can use it in an initialization function. As coded, you are are describing a 64k x 16 bit rom (1 Mbit, quite large). Is that what you want to achieve?
It's impossible to have a reading ending in ".30". Read the rom code out of the device and see if the 8-bit family code matches. Should be 28h.
A conversion table is an appropriate solution for the problem. According to the low ADC resolution, a direct table should be feasible. For larger resolutions > 12 bit, table interpolations can save rom resources at the cost of additional multiply and add operations. I prefer to calculate the table values in VHDL, but I don't know if your VHDL kn
I dont quit understrand the question. The rom size matches with the address bus. Both bits of code look like a rom to me.
Change the code a little. Change these 2 lines: tlong = adc_rd * 5000 ' Milivolt tlong = tlong / 1023 ' 0..1023 -> 0-5000mV to tlong = (adc_rd * 5000) >> 10 Also, declare a 16-bit variable at the beginning of the code: dim tempt as word After the line: tlong = (adc_rd * 5000) >> 10[/code
data= 19.0 xdata=0 code=238, what is the program size on the chip ??? And what is the unit , byte or kilobyte ...??? Each of the three entries represent a distinct region of storage. The units are in bytes, with any decimal value representing single bit variables. The "data" section represents on-chip RAM storage
I am working on vhdl code for Numerically Controlled Oscillator using Xilinx 12.1.When I use the IP core generator to create rom look up table with a depth of 32 values and 15 bit width I have no problems it gets generated. But when I need a depth of 8192 values and 15 bit width the ip core is unable to generate the lookup table ,despite (...)