BATC_VSHIFT
batc = (s_text >> BATC_BLKSHIFT) << BATC_VSHIFT;
batc = (s_data >> BATC_BLKSHIFT) << BATC_VSHIFT;
batcva = (batc << (BATC_BLKSHIFT - BATC_VSHIFT)) &
((pa >> BATC_BLKSHIFT) << BATC_VSHIFT);