Subject: [sv-cc] Draft 5 Changes Review Request: Part-Select
From: Duncan, Ralph (ralph_duncan@mentorg.com)
Date: Wed Feb 25 2004 - 10:30:02 PST
Swapnajit, 
We propose a change to the LRM sections pertaining to 
part-select operations on packed 2 and 4-state vectors. 
This change: 
. appears in C code comment text for file SVDPI.H 
. appears in both LRM Sections: E.10.3.2 and F.1. 
The change consists of adding the following comment text: 
"In part select operations, the data is copied to or from the  
canonical representation part ('chunk') designated by range [w-1:0] 
and the implementation representation part designated by range [w+i-1:i]." 
The entire comment section would now appear as shown below. 
 
   /* 
    * functions for part select 
    * 
    * a narrow (<=32 bits) part select is copied between 
    * the implementation representation and a single chunk of 
    * canonical representation 
    * Normalized ranges and indexing [n-1:0] are used for both arrays: 
    * the array in the implementation representation and the canonical
array. 
    * 
    * s=source, d=destination, i=starting bit index, w=width 
    * like for variable part selects; limitations: w <= 32. 
    * In part select operations, the data is copied to or from the 
    * canonical representation part ('chunk') designated by range [w-1:0] 
    * and the implementation representation part designated by range
[w+i-1:i]. 
    */ 
In accord with your earlier email, please forward this request to 
the "LRM editors" at your convenience. 
Ralph Duncan
Mentor Graphics 
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