The _cccc_llll_rrrr_bbbb_uuuu_ffff function zeros a buffer and sets the _bbbb______rrrr_eeee_ssss_iiii_dddd member of the
_bbbb_uuuu_ffff(D4) structure to 0. Zeros are placed in the buffer starting at the
address specified by _bbbb______uuuu_nnnn_...._bbbb______aaaa_dddd_dddd_rrrr for a length of _bbbb______bbbb_cccc_oooo_uuuu_nnnn_tttt bytes.
RRRReeeettttuuuurrrrnnnn VVVVaaaalllluuuueeeessss
None
UUUUSSSSAAAAGGGGEEEE
If the buffer has the _BBBB______PPPP_AAAA_GGGG_EEEE_IIII_OOOO or the _BBBB______PPPP_HHHH_YYYY_SSSS flag set in the _bbbb______ffff_llll_aaaa_gggg_ssss
field, then _cccc_llll_rrrr_bbbb_uuuu_ffff should not be called until the proper virtual space
has been allocated by a call to _bbbb_pppp______mmmm_aaaa_pppp_iiii_nnnn(D3).