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Cannot Assign To Memory Directly Verilog


Deficit_Round_Robbin_algorithem #( .Quantom(), .Num_queues(NUM_QUEUES), .IN_FIFO_DEPTH_BIT(IN_FIFO_DEPTH_BIT) ) algorithem_module( .clk(axi_aclk), .axi_resetn(axi_resetn), .m_axis_tready(m_axis_tready), .packet_size(packet_size_temp), //Line 247 .fifo_out_tlast(fifo_out_tlast), .empty(empty), .rd_en(rd_en), .pkt_fwd(pkt_fwd) ); And here is the error message ERROR:HDLCompiler:251 - "K:/final project/codes/v3/input_arbiter.v" Line 247: Cannot Verilog's syntax does not support passing a reference to the memory without explicitly connecting the memory's address and data ports to the module's ports. –MarkU Sep 1 '14 at 1:36 add In my original code below, i shouldn't have included MEM_OE condition in the always block. C++: can I hint the optimizer by giving the range of an integer? have a peek at this web-site

outputs in simulation was not VirtualPins. Anyone know what it is? Elements of memory type can be accessed by memory index (Example 3). If I receive written permission to use content from a paper without citing, is it plagiarism? http://stackoverflow.com/questions/5082274/xilinx-ise-cannot-access-memory-q-directly

Cannot Assign A Packed Type To An Unpacked Type

But what if I only need to synthesize a code which can do read in one cycle and do write in one cycle? I am not paid for forum posts. Alternative without synchronous memory access Since there are only three addresses, and they seem to be read-only, you could pass them all individually instead of packing them into row_data memory: module Powered by IXwebhosting Altera Forums > Device and Tools Related > Quartus II and EDA Tools Discussion > How to write a verilog memory code with a inout data port PDA

But the problem is still not solved. Toggle navigation My Account Sign Out Sign In Language Toggle English Japanese Chinese Shopping Cart All Silicon Devices Boards and Kits Intellectual Property Support Documentation Knowledge Base Community Forums Partners Videos share|improve this answer answered Sep 9 '15 at 18:04 Greg 2,574820 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Anyone know what it is?

Why cast an A-lister for Groot? Part-select Of Memory Is Not Allowed more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed My error was [Synth 8 - 1717] can not access memory ** directly and this fixed it –Sam Jun 3 '13 at 21:37 add a comment| Your Answer draft saved I changed one method signature and broke 25,000 other classes.

ertssFebruary 7th, 2011, 07:50 AMHi bark, Yea, I got errors in simulation. Can I switch from past tense to present tense in an epilogue? White ring of pus forming around branches The 10'000 year skyscraper Without opening the PHB, is there a way to know if it's a particular printing? But anyway I didn't get one clock read operation.

Part-select Of Memory Is Not Allowed

wire [IN_FIFO_DEPTH_BIT:0] depth_of_fifo[NUM_QUEUES-1:0];//storing the depth of all FIFOs wire [IN_FIFO_DEPTH_BIT - 1:0] packet_size_temp[NUM_QUEUES-1:0]; Here's the part of my verilog code that is the source of the error. Memory words can be accessed individually, but bit-select and part-select operations cannot be done on memories or memory words directly. Cannot Assign A Packed Type To An Unpacked Type Then how should i modify my verilog code? Port Must Not Be Declared To Be An Array Then how should i modify my verilog code?

check out: you declared 12-bit wide address bus, but just 256 memory cell. http://electrictricycle.net/cannot-assign/cannot-assign-to.html Did you perform a functional or timing simulation? ertssFebruary 7th, 2011, 08:17 AMCris72, Thank you. Storage of a material that passes through non-living matter How do I sort files into a sub-folder based on filename part? Array In Verilog

Provide useful details (with webpage, datasheet links, please).7. Is there a wage gap between smokers and non-smokers? Only compile it in QuartusII9.1 and simulate. Source Leveling Pokemon using the Lumiose Tower infinite loop path Does every interesting photograph have a story to tell?

Can I switch from past tense to present tense in an epilogue? The read-only memory row_data must connect to module sorting_three through its 2-bit address port and its 4-bit data port. So this memory must have two address bits and four data bits.

If the module needed to be able to write into the memory as well as read, then the memory needs to use additional ports for data_in and write_enable.

Not the answer you're looking for? Looks like module stimulus must be a test bench for module sorting_three, since module stimulus does not have any input or output ports. There is no such thing as the address of the row_data array "in memory", there's only the RTL code that describes the hardware. Leveling Pokemon using the Lumiose Tower infinite loop path Can I get a dual entry Schengen visa for tourism purpose for me and my wife?

No clock in testbench A second problem is this test bench doesn't seem to be driving a clock. Can a countable number of intersections of subsets or their complements be the null set? I am not paid for forum posts. have a peek here Review on +: stackoverflow: Indexing vectors and arrays with +: and What is +: and -:?

Join them; it only takes a minute: Sign up Xilinx ISE “Cannot access memory Q directly” up vote 1 down vote favorite What is this error and what am I supposed The 'i_mem' variable has 8 words (each word is an integer register). Thank you! my simulation on previous page was for memory.

Will this be where the problem comes from? Generated Sun, 06 Nov 2016 14:14:53 GMT by s_sg2 (squid/3.5.20) Mi cuentaBúsquedaMapsYouTubePlayNoticiasGmailDriveCalendarGoogle+TraductorFotosMásShoppingDocumentosLibrosBloggerContactosHangoutsAún más de GoogleIniciar sesiónCampos ocultosBuscar grupos o mensajes Memories Formal Definition Memories are arrays of registers. verilog share|improve this question edited Sep 9 '15 at 9:46 asked Sep 9 '15 at 8:54 user2988239 53 add a comment| 1 Answer 1 active oldest votes up vote 0 down