[ibis-interconn] IBIS Touchstone Binary Format - [Fwd: FW: [Accellera:vhdl] Time to start up?]
- From: Bob Ross <bob@xxxxxxxxxxxxx>
- To: IBIS-Interconnect <ibis-interconn@xxxxxxxxxxxxx>
- Date: Thu, 25 Feb 2010 19:01:19 -0800
All:
I am forwarding this to the interconnect task group
because it may relate to binary encoding issues.
Bob
-------- Original Message --------
Subject: FW: [Accellera:vhdl] Time to start up?
Date: Thu, 25 Feb 2010 08:45:50 -0800
From: David Smith <David.Smith@xxxxxxxxxxxx>
To: "vhdl-ams@xxxxxxx" <vhdl-ams@xxxxxxx>
Forwarding from the 1076 group.
Regards
David
David W. Smith
Synopsys Scientist
Synopsys, Inc.
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-----Original Message-----
From: vhdl@xxxxxxxxxxxxxxxxxxx [mailto:vhdl@xxxxxxxxxxxxxxxxxxx] On Behalf Of
David Bishop
Sent: Thursday, February 25, 2010 5:58 AM
To: Peter Ashenden
Cc: vhdl@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Accellera:vhdl] Time to start up?
Just found out that when IEEE 1076-2008 came out, so did IEEE 756-2008
(the floating point standard). So, now the floating point packages are
out of date with the standard.
Some of the "what to do here" has me at a loss. In the new standard,
there are 16, 32, 64, and 128 bit binary floating point definitions (the
old one had only 32 and 64, IEEE 854 had 128). Now there are base 10
exponent definitions (who would use these!) with what is called a
"density packed decimal" format. Rounding modes now have a new
"rounding direction". Lots of new functions.
Here's a draft of the new standard:
http://www.validlab.com/754R/nonabelian.com/754/comments/Q754.129.pdf
I would guess this is close to the final.
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Bob Ross
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