src/opt/sim/simSeq.c

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#include "abc.h"
#include "sim.h"


static void Sim_SimulateSeqFrame( Vec_Ptr_t * vInfo, Abc_Ntk_t * pNtk, int iFrames, int nWords, int fTransfer );


Vec_Ptr_t * Sim_SimulateSeqRandom( Abc_Ntk_t * pNtk, int nFrames, int nWords )
{
    Vec_Ptr_t * vInfo;
    Abc_Obj_t * pNode;
    int i;
    assert( Abc_NtkIsStrash(pNtk) );
    vInfo = Sim_UtilInfoAlloc( Abc_NtkObjNumMax(pNtk), nWords * nFrames, 0 );
    // set the constant data
    pNode = Abc_AigConst1(pNtk);
    Sim_UtilSetConst( Sim_SimInfoGet(vInfo,pNode), nWords * nFrames, 1 );
    // set the random PI data
    Abc_NtkForEachPi( pNtk, pNode, i )
        Sim_UtilSetRandom( Sim_SimInfoGet(vInfo,pNode), nWords * nFrames );
    // set the initial state data
    Abc_NtkForEachLatch( pNtk, pNode, i )
        if ( Abc_LatchIsInit0(pNode) )
            Sim_UtilSetConst( Sim_SimInfoGet(vInfo,pNode), nWords, 0 );
        else if ( Abc_LatchIsInit1(pNode) )
            Sim_UtilSetConst( Sim_SimInfoGet(vInfo,pNode), nWords, 1 );
        else 
            Sim_UtilSetRandom( Sim_SimInfoGet(vInfo,pNode), nWords );
    // simulate the nodes for the given number of timeframes
    for ( i = 0; i < nFrames; i++ )
        Sim_SimulateSeqFrame( vInfo, pNtk, i, nWords, (int)(i < nFrames-1) );
    return vInfo;
}

Vec_Ptr_t * Sim_SimulateSeqModel( Abc_Ntk_t * pNtk, int nFrames, int * pModel )
{
    Vec_Ptr_t * vInfo;
    Abc_Obj_t * pNode;
    unsigned * pUnsigned;
    int i, k;
    vInfo = Sim_UtilInfoAlloc( Abc_NtkObjNumMax(pNtk), nFrames, 0 );
    // set the constant data
    pNode = Abc_AigConst1(pNtk);
    Sim_UtilSetConst( Sim_SimInfoGet(vInfo,pNode), nFrames, 1 );
    // set the random PI data
    Abc_NtkForEachPi( pNtk, pNode, i )
    {
        pUnsigned = Sim_SimInfoGet(vInfo,pNode);
        for ( k = 0; k < nFrames; k++ )
            pUnsigned[k] = pModel[k * Abc_NtkPiNum(pNtk) + i] ? ~((unsigned)0) : 0;
    }
    // set the initial state data
    Abc_NtkForEachLatch( pNtk, pNode, i )
    {
        pUnsigned = Sim_SimInfoGet(vInfo,pNode);
        if ( Abc_LatchIsInit0(pNode) )
            pUnsigned[0] = 0;
        else if ( Abc_LatchIsInit1(pNode) )
            pUnsigned[0] = ~((unsigned)0);
        else 
            pUnsigned[0] = SIM_RANDOM_UNSIGNED;
    }
    // simulate the nodes for the given number of timeframes
    for ( i = 0; i < nFrames; i++ )
        Sim_SimulateSeqFrame( vInfo, pNtk, i, 1, (int)(i < nFrames-1) );
/*
    // print the simulated values
    for ( i = 0; i < nFrames; i++ )
    {
        printf( "Frame %d : ", i+1 );
        Abc_NtkForEachPi( pNtk, pNode, k )
            printf( "%d", Sim_SimInfoGet(vInfo,pNode)[i] > 0 );
        printf( " " );
        Abc_NtkForEachLatch( pNtk, pNode, k )
            printf( "%d", Sim_SimInfoGet(vInfo,pNode)[i] > 0 );
        printf( " " );
        Abc_NtkForEachPo( pNtk, pNode, k )
            printf( "%d", Sim_SimInfoGet(vInfo,pNode)[i] > 0 );
        printf( "\n" );
    }
    printf( "\n" );
*/
    return vInfo;
}

void Sim_SimulateSeqFrame( Vec_Ptr_t * vInfo, Abc_Ntk_t * pNtk, int iFrames, int nWords, int fTransfer )
{
    Abc_Obj_t * pNode;
    int i;
    Abc_NtkForEachNode( pNtk, pNode, i )
        Sim_UtilSimulateNodeOne( pNode, vInfo, nWords, iFrames * nWords );
    Abc_NtkForEachPo( pNtk, pNode, i )
        Sim_UtilTransferNodeOne( pNode, vInfo, nWords, iFrames * nWords, 0 );
    if ( !fTransfer )
        return;
    Abc_NtkForEachLatch( pNtk, pNode, i )
        Sim_UtilTransferNodeOne( pNode, vInfo, nWords, iFrames * nWords, 1 );
}

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