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Message
From: Uwe Bonnes<bon@e...>
Date: Wed Mar 31 09:40:09 CEST 2004
Subject: [oc] How to use embedded multipliers in Virtex-II devices
>>>>> "qamar" == qamar <qamar@u...> writes:
qamar> Hi all, I am still facing problems in implementing embedded
qamar> multipliers in Virtex- II devices. I used the xilinxmult(dest, a,
qamar> b) and used LEDs to take output but always I faced this error
qamar> ERROR:NgdBuild:604 - logical block 'B3_main_30_main_Multiplier'
qamar> with type 'MULT18X18' could not be resolved. A pin name
qamar> misspelling can cause this, a missing edif or ngc file, or the
qamar> misspelling of a type name. Symbol 'MULT18X18' is not supported
qamar> in target 'virtex2'.
In Verilog I did something like
unsigned int [17:0] a,b,
unsigned int result [35:0];
assign result = a*b;
and webpack inferred a block multiplier on devices with block muultipliereds
and it created a multiplier using CLB resources on devices without...
Bye
--
Uwe Bonnes bon@e...
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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