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Describe .shift behavior.

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steve 2001-07-04 22:59:04 +00:00
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commit 96403de903
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vvp/README.txt
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@ -1,7 +1,7 @@
/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
*
* $Id: README.txt,v 1.33 2001/07/01 23:43:58 steve Exp $
* $Id: README.txt,v 1.34 2001/07/04 22:59:04 steve Exp $
*/
VVP SIMULATION ENGINE
@ -468,6 +468,18 @@ functor output is 1 of the comparison is true, 0 if false, and x
otherwise.
STRUCTURAL SHIFTER STATEMENTS:
Variable shifts in structural context are implemented with .shift
statements:
<label> .shift/sl <wid>, <symbols_list>;
The shifter has a width that defines the number of outputs and the
number of data inputs. The first <wid> symbols in the <symbols_list>
gives the input data. The remaining hold the shift value, lsb first.
THREAD STATEMENTS:
Thread statements create the initial threads for a simulation. These