: aspfb! ( n a --, write word n to flash buffer addr a )
    SWAP 256 /MOD ( a lo hi ) SWAP ROT ( hi lo a )
    DUP ROT ( hi a a lo ) SWAP ( hi a lo a )
    0 0x40 ( hi a lo a 0 0x40 ) _cmd DROP ( hi a )
    0 0x48 _cmd DROP ;
: aspfp! ( page --, write buffer to page )
    0 SWAP aspfpgsz @ * 256 /MOD ( 0 lsb msb )
    0x4c _cmd DROP asprdy ;
: aspf@ ( page a -- n, read word from flash )
    SWAP aspfpgsz @ * OR ( addr ) 256 /MOD ( lsb msb )
    2DUP 0 ROT> ( lsb msb 0 lsb msb )
    0x20 _cmd ( lsb msb low )
    ROT> 0 ROT> ( low 0 lsb msb ) 0x28 _cmd 8 LSHIFT OR ;