ppuuttuubbdd() -- Memory-Manipulation Routine

ppuuttuubbdd(_u, _b)
cchhaarr *_u;
cchhaarr _b;

ppuuttuubbdd() stores  byte _b  at address  _u in the  user's data segment.   If an
address fault occurs, it sets field uu.uu_eerrrroorr to EEFFAAUULLTT.

_S_e_e _A_l_s_o
mmeemmoorryy-mmaanniippuullaattiioonn rroouuttiinneess
