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Hi All,

I am working through the Graphic LCD example, and I am able to use the Quartus Megafunction Generator to create a pre-programmed block RAM programmed with a MIF/HEX file which I can hand-edit.

This is great if I want to type in the data bit-by-bit, but HOW on earth do you convert an image FILE (i.e. bmp file) to a monochrome MIF/HEX file?

Thanks in advance for any help!!!

I wrote a routine a long time ago... I doubt I can find it. You probably have to write your own. Write a routine that reads the bmp file in binary mode, extracts each pixel and outputs the mif/hex text file.

Thanks...

Here's an update, in case this might help anyone else. I was able to successfully create a MIF file this way:

I saved a monochrome graphic file (i.e. converted it to 1-bit graphics) in RAW format in GIMP, then used the following command on it (using Cygwin):

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od -td1 -v -w8 VGAtest | nl -v0 | gawk "{print \"\t\",$1,\":\",$3$4$5$6$7$8$9$10\";\"}" > VGA_Mem.mif


Then I edited the resulting file (VGA_Mem.mif) with Notepad, and put the following at the top:

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WIDTH=8;
DEPTH=512;

ADDRESS_RADIX=DEC;
DATA_RADIX=BIN;

BEGIN CONTENT

At the end, I put:

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END;

Please post any other suggestions if you have them!

EDIT: I actually used Gnuwin32(CoreUtils and Gawk packages) for the above, not Cygwin. The difference is that Gnuwin runs natively on Windows, while Cygwin uses a UNIX emulation layer. I executed the above commands in a DOS prompt, not a UNIX shell, which is why the quotes are so odd-looking for GAWK.

Looks very reasonable.