Support Vector Machine VHDL

Its actually 18 bits signed fixed point number, with 8 bits integer and 10 bits fractional.

The sfixed/ufixed types were added with VHDL 2008 (there is a 1993 compatability library). It allows you to represent fixed point numbers a bit more easily (and slightly less confusingly). Positive indexes are the integer part, and -ve are the fractional parts.

eg. res : sfixed(1 downto -2) := "0101";

= 1.25

"0011" = 0.75

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I would like to know if there someone has a VHDL code for Support Vector Machine.

I would also like to know if someone could explain to me this line of code

res: out sfixed(7 downto -10)

I know what is downto, but I have never seen it to a negative number before.

Does that mean this is sfixed is 17 bits? If so why not 16 downto 0

Thanks

I also attached an SVM code that I understand but having trouble some parts.

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Please Sir, I need your help in making me understand this line

use ieee.fixed_pkg.all

when I ran the program, I found this problem

ERROR:HDLParsers:3014 - "C:/Users/George1/Desktop/fixed_top.vhd" Line 4. Library unit fixed_pkg is not available in library ieee.

I need the library please.

Thank you so much

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I would like to know if there someone has a VHDL code for Support Vector Machine

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Doing a quick search o the Web, we can find some academic researches and even working implementations on VHDL, but I would be cautious in regard to find some really trustworthy code. The LibSVM is a well known and reliable library, but wrote in C, with which you could consider running under a softcore environment, although loosing some performance in terms of speed if compared to a hardware-based implementation.

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Please Sir, I need your help in making me understand this line

use ieee.fixed_pkg.all

when I ran the program, I found this problem

ERROR:HDLParsers:3014 - "C:/Users/George1/Desktop/fixed_top.vhd" Line 4. Library unit fixed_pkg is not available in library ieee.

I need the library please.

Thank you so much

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How are you trying to compile the code?

the fixed_pkg is part of the VHDL 2008 standard and is included with modelsim. For Quartus prime 15.1 and later, the package is included. For earlier versions, you need to find a version of the library from somewhere.

>For Quartus prime 15.1 and later, the package is included.

only PRO edition (aka ARRIA 10)

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How are you trying to compile the code?

the fixed_pkg is part of the VHDL 2008 standard and is included with modelsim. For Quartus prime 15.1 and later, the package is included. For earlier versions, you need to find a version of the library from somewhere.

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I am compiling the code with Xilinx ISE.

You are right when I compile it with Modelsim, it runs with no error.

How can I compile with Xilinx

You'll need to get hold of the Xilinx version of the fixed_pkg that is '93 compatible.

And you'll get more help on the Xilinx forum (this is a altera forum, Xilinx competitor.)