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Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/30/2019)
Your code seems to be working very well: Alligned.pngI tried the original 9x9 yellow border filled with blue and it worked very well. I have tried a larger image...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/27/2019)
I have set address=-1, changed the ROM file to values 01 02 03 04 05 06 07 08 09 and changed my Pal.txt to include the 01 to 09 RGB colours (FF 00 00 FF FF 00 00...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/25/2019)
Thanks for getting back again.I have re-arranged my horizontal and vertical layout as shown in this file VGA640x480.vThe 9x9 image should be displayed at 100,50...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/24/2019)
Many thanks for the reply and for explaining about when to use faster clock speeds, it makes sense now.I have shown below what the screen looks like (not an actual...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/23/2019)
I have since done the following;1. Installed the latest update for Intel Quartus Prime Lite 18.1.12. Created new a MIF file 9x9 pixels using 8 bit values     ...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/19/2019)
Just a thought, I have something in my mind that I think I read somewhere that the clock speed for reading ROM/RAM should be twice the speed of the normal clock...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/19/2019)
1. I tried an image 2x10 and lost the 2nd (last) pixel, as in previous attempts (this was still using the read from ROM values): ROM contained "01 02 01 02 01 02...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/18/2019)
With the values that you have entered, I can see that the code is correct, thanks for that.I have created the different combinations which you have suggested and...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/16/2019)
Thanks for the replyI have amended the code to;`timescale 1ns / 1ps module VGA640x480(clk, reset, red, green, blue, vsync,hsync); input clk,reset; output vsync,hsync; output...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/15/2019)
Many thanks for your replies.I have amended the code to;`timescale 1ns / 1psmodule VGA640x480(clk, reset, red, green, blue, vsync,hsync);input clk,reset;output vsync,hsync;output...

Re: Altera Cyclone IV - ROM: 1-Port Problem

Reply posted 2 years ago (04/14/2019)
Thanks for your reply.So if I change the "clock" to "clk" how would I be able to write values to "red", "green" and "blue" (the values I am trying to write to the...

Altera Cyclone IV - ROM: 1-Port Problem

New thread started 2 years ago
Hi, I have created a MIF file containing 100 x 16bit values. The values point to a colour palette which contains the RGB values for 10 colours. In Quartus Prime...

Reading SD Card - Where to start?

New thread started 2 years ago
Hi, The project i am working on is to display a 800x600 super vga image. I am currently using Quantus Prime lite to program my FPGA. My code looks at my laptops...

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