File I/O with Synplify

A .mif file is specific to X devices.

Synplify can synthesize variable or constant arrays into ram or rom using only vhdl source code for any fpga.

Vendor-specific download widgets are handled with vendor attributes in the code like this:

But consider maintaining vendor-independent code. That's a common reason for using Synplify over XST in the first place.

-- Mike Treseler

Thanks for your reply Mike. Ideally I'd like to read any kind of memory configuration file into a design with Synplify - doesn't have to be Xilinx-specific formats.

With XST, what I can do is read in a .mif file and then parse the data to create init values for my memory elements. Synplify does not appear to able to do the file read.

Any more ideas?

Andrew

Mike Treseler wrote:

This subject has been discussed on comp.lang.vhdl

-- Mike Treseler

Have your program/script create a package file with a constant table and include it in your probject. You can then "use" the package in your architecture and directly use the constant table.

Andrew Whyte wrote:

Synplify projects are in fact Tcl scripts. So you might write a MIF parser in Tcl (easy) and write down a synthesizable vhdl Rom table (entity). I did this in C for a DDFS. Probably free on my website.

Bert Cuzeau