q/(128*SL) 1024-byte values  
G(ZERO(1024),G(ZERO(1024), 
Z || LE64(1) || ZERO(968) )), 
G(ZERO(1024),G(ZERO(1024), 
Z || LE64(2) || ZERO(968) )),... ,
G(ZERO(1024),G(ZERO(1024), 
Z || LE64(q/(128*SL)) || ZERO(968) )),