RE: [vhdl-200x-ft] FT9 & Sizing "X"

Jim,

Nothing specific. My concern is that, by adding new requirements and
proposals now, we are not reaching closure. The FT9 proposal addresses the
requirement to be able to specify sizing of bit-string literals with signed
and unsigned numeric interpretation. We've reviewed the existing proposal
and agreed that it is done. On that basis, I've gone ahead and drafted an
LCS. At what point do we close the door on new requirements for this
revision?

Cheers,

PA

--
Dr. Peter J. Ashenden                        peter@ashenden.com.au
Ashenden Designs Pty. Ltd.                   www.ashenden.com.au
PO Box 640                                   Ph:  +61 8 8339 7532
Stirling, SA 5152                            Fax: +61 8 8339 2616
Australia                                    Mobile: +61 414 70 9106
> -----Original Message-----
> From: owner-vhdl-200x-ft@eda.org 
> [mailto:owner-vhdl-200x-ft@eda.org] On Behalf Of Jim Lewis
> Sent: Monday, 6 December 2004 13:01
> To: vhdl-200x-ft@eda.org
> Subject: Re: [vhdl-200x-ft] FT9 & Sizing "X"
> 
> 
> Peter,
> Do you have something else in mind other than
> something simple like I suggested:
>      5R'X' = 5R"X" = "XXXXX"
>      5R'0' = 5R"0" = "00000"
>      5R'1' = 5R"1" = "11111"
> 
> Regards,
> Jim
> 
> 
> 
> 
> > Jim,
> > 
> > I think that you are adding a requirement that was never 
> there before.  
> > Can we put this on the M&P list?
> > 
> > Cheers,
> > 
> > PA
> > --
> > Dr. Peter J. Ashenden                        peter@ashenden.com.au
> > Ashenden Designs Pty. Ltd.                   www.ashenden.com.au
> > PO Box 640                                   Ph:  +61 8 8339 7532
> > Stirling, SA 5152                            Fax: +61 8 8339 2616
> > Australia                                    Mobile: +61 414 70 9106
> > 
> > 
> > 
> >>-----Original Message-----
> >>From: owner-vhdl-200x-ft@eda.org
> >>[mailto:owner-vhdl-200x-ft@eda.org] On Behalf Of Jim Lewis
> >>Sent: Saturday, 4 December 2004 04:53
> >>To: vhdl-200x-ft@eda.org
> >>Subject: [vhdl-200x-ft] FT9 & Sizing "X"
> >>
> >>
> >>Hi,
> >>With FT9, what is the best way to create a replicated
> >>string of X or 1 or 0.
> >>    5SB"X"      "XXXXX"
> >>    5SB"0"      "00000"
> >>    5SB"1"      "11111"
> >>
> >>However, if I change this to hex, it changes the result for 1:
> >>    5SX"X"      "XXXXX"
> >>    5SX"0"      "00000"
> >>    5SX"1"      "00001"
> >>
> >>If I make it unsigned (the default):
> >>    5UB"X"      "0000X"        5B"X"
> >>    5UB"0"      "00000"        5B"0"
> >>    5UB"1"      "00001"        5B"1"
> >>
> >>Bit replication of identical values is something I use
> >>alot and would be handy if it was easier.  It seems odd
> >>that I need to use S to get the results I want.
> >>
> >>I think we would benefit from some replication operation.
> >>Something like:
> >>    5R'X' = 5R"X" = "XXXXX"
> >>    5R'0' = 5R"0" = "00000"
> >>    5R'1' = 5R"1" = "11111"
> >>
> >>Cheers,
> >>Jim
> >>--
> >>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >>Jim Lewis
> >>Director of Training             mailto:Jim@SynthWorks.com
> >>SynthWorks Design Inc.           http://www.SynthWorks.com
> >>1-503-590-4787
> >>
> >>Expert VHDL Training for Hardware Design and Verification
> >>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >>
> > 
> > 
> > 
> > 
> 
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Jim Lewis
> Director of Training             mailto:Jim@SynthWorks.com
> SynthWorks Design Inc.           http://www.SynthWorks.com
> 1-503-590-4787
> 
> Expert VHDL Training for Hardware Design and Verification 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>