Floating point synthesis

N

newsgroup

Guest
Hi,

I am using floating point package provided by 1076.3 working group (David
Bishop et. al.). For synthesis i am using Xilinx ISE. Of course, I am unable
to synthesize it my vhdl which uses floating point operators.
Can anyone tell me how to include the floating point library for synthesis
in Xilinx ISE.

Thanks,
Sunil
 
newsgroup wrote:
Hi,

I am using floating point package provided by 1076.3 working group (David
Bishop et. al.). For synthesis i am using Xilinx ISE. Of course, I am unable
to synthesize it my vhdl which uses floating point operators.
Can anyone tell me how to include the floating point library for synthesis
in Xilinx ISE.
Click to expand...
The problem here is that XST can not deal with the negative index I use.
Xilinx has promised to fix this in the next major release.

If I were you, I'd use a copy of Synplicity.
 
David Bishop wrote:
newsgroup wrote:

Hi,

I am using floating point package provided by 1076.3 working group
(David Bishop et. al.). For synthesis i am using Xilinx ISE. Of
course, I am unable to synthesize it my vhdl which uses floating point
operators.
Can anyone tell me how to include the floating point library for
synthesis in Xilinx ISE.


The problem here is that XST can not deal with the negative index I use.
Xilinx has promised to fix this in the next major release.

If I were you, I'd use a copy of Synplicity.
Click to expand...
Hi David,

Even with synplicity, is there any documentation which states how to
include the floating point library for synthesis.

Thanks,
Sunil
 
SKeffect wrote:
I am using floating point package provided by 1076.3 working group
(David Bishop et. al.). For synthesis i am using Xilinx ISE. Of
course, I am unable to synthesize it my vhdl which uses floating
point operators.
Can anyone tell me how to include the floating point library for
synthesis in Xilinx ISE.

The problem here is that XST can not deal with the negative index I use.
Xilinx has promised to fix this in the next major release.

If I were you, I'd use a copy of Synplicity.
Hi David,

Even with synplicity, is there any documentation which states how to
include the floating point library for synthesis.
Click to expand...
What I did was to create a synthesis test case. You can download it
from http://www.eda.org/vhdl-200x/vhdl-200x-ft/files.html

The file is "fphdl_synth.vhd". In this file I put everything from the
floating point package I though was synthesizable. I ran this through
several synthesis vendors.
 
Hi David,

Thank you for sending me the correct link.

Do you have a testcase that uses only the math real package?

Thanks,
Vinima
"David Bishop" <dbishop@vhdl.org> wrote in message
news:qxEBe.43549$0i3.19606@twister.nyroc.rr.com...
SKeffect wrote:
I am using floating point package provided by 1076.3 working group
(David Bishop et. al.). For synthesis i am using Xilinx ISE. Of course,
I am unable to synthesize it my vhdl which uses floating point
operators.
Can anyone tell me how to include the floating point library for
synthesis in Xilinx ISE.

The problem here is that XST can not deal with the negative index I use.
Xilinx has promised to fix this in the next major release.

If I were you, I'd use a copy of Synplicity.
Hi David,

Even with synplicity, is there any documentation which states how to
include the floating point library for synthesis.

What I did was to create a synthesis test case. You can download it
from http://www.eda.org/vhdl-200x/vhdl-200x-ft/files.html

The file is "fphdl_synth.vhd". In this file I put everything from the
floating point package I though was synthesizable. I ran this through
several synthesis vendors.
Click to expand...
 
David Bishop wrote:
SKeffect wrote:

What I did was to create a synthesis test case. You can download it
from http://www.eda.org/vhdl-200x/vhdl-200x-ft/files.html
Click to expand...
Should be:
http://www.eda.org/vhdl-200x/vhdl-200x-ft/packages/files.html
 
Hi David,

The link to your floating point synthesis test case is down. Can you please
post the testcase on the newsgroup or fix the link?

Thanks for your help.

Vinima

"David Bishop" <dbishop@vhdl.org> wrote in message
news:qxEBe.43549$0i3.19606@twister.nyroc.rr.com...
SKeffect wrote:
I am using floating point package provided by 1076.3 working group
(David Bishop et. al.). For synthesis i am using Xilinx ISE. Of course,
I am unable to synthesize it my vhdl which uses floating point
operators.
Can anyone tell me how to include the floating point library for
synthesis in Xilinx ISE.

The problem here is that XST can not deal with the negative index I use.
Xilinx has promised to fix this in the next major release.

If I were you, I'd use a copy of Synplicity.
Hi David,

Even with synplicity, is there any documentation which states how to
include the floating point library for synthesis.

What I did was to create a synthesis test case. You can download it
from http://www.eda.org/vhdl-200x/vhdl-200x-ft/files.html

The file is "fphdl_synth.vhd". In this file I put everything from the
floating point package I though was synthesizable. I ran this through
several synthesis vendors.
Click to expand...
 
Those who want to hear about the new FP package should check out MAPLD
in Washington DC in september. Where a presentation of the new types
and packages. Look at =>
http://klabs.org/mapld05/abstracts/189_lewis_a.html

/rn
 
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