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.\" -*- nroff -*-
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.\" $Id: xilinx_ghdl_unisim.1 522 2013-05-24 17:50:29Z mueller $
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.\"
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.\" Copyright 2010- by Walter F.J. Mueller
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.\"
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.\" ------------------------------------------------------------------
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.
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.TH XILINX_GHDL_UNISIM 1 2010-07-25 "Retro Project" "Retro Project Manual"
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.\" ------------------------------------------------------------------
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.SH NAME
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xilinx_ghdl_unisim \- compile Xilinx ISE UNISIM libraries for ghdl
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.\" ------------------------------------------------------------------
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.SH SYNOPSIS
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.
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.B xilinx_ghdl_unisim
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.
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.\" ------------------------------------------------------------------
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.SH DESCRIPTION
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\fBxilinx_ghdl_unisim\fP compiles the Xilinx ISE/WebPack UNISIM libraries for
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\fBghdl\fP. The object files generated by \fBghdl\fP
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are stored in the directory tree of the currently active version of
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ISE/WebPack under \fI$XILINX/ghdl/unisim\fP.
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This is convenient when several ISE/WebPack versions are installed in
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parallel, the \fB$XILINX\fP
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environment variable is enough to setup the context for the synthesis
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flows as well as for build of \fBghdl\fP models. Just use the
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\fBghdl\fP option
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.EX
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-P${XILINX}/ghdl/unisim
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.EE
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to link to the UNISIM library.
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Up to ISE 10 the VITAL models were all concatinated in one large file
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\fIunisim_VITAL.vhd\fP. In this case the \fBxilinx_vhdl_chop\fP
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helper script will create individual source files for each model.
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For ISE 11 and later the modules are shipped as separate files.
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The XILINX source code has since many releases some buggy statements with
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self-referencial initializations. They seem to be tolerated by the commercial
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tools but not by \fBghdl\fP.
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The \fBxilinx_vhdl_memcolltype_fix\fP
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helper script simply removes them, no further problems seen so far.
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.\" ------------------------------------------------------------------
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.SH ENVIRONMENT VARIABLES
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.IP \fBXILINX\fP
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points to the root of the currently active ISE/WebPack installation.
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.
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.\" ------------------------------------------------------------------
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.SH FILES
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.IP \fI$XILINX/vhdl/src/unisims\fP
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The vhdl sources for the UNISIM library are looked for in this directory tree.
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.IP \fI$XILINX/ghdl/unisim\fP
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The created object files will be written into this directory. The directory
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is created if not yet existing. Note that the \fI$XILINX\fP
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directory must be writable for the script.
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.
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.\" ------------------------------------------------------------------
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.SH "SEE ALSO"
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.BR ghdl (1),
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.BR xilinx_ghdl_simprim (1)
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.
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.\" ------------------------------------------------------------------
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.SH AUTHOR
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Walter F.J. Mueller
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