if reset ='1' then
loveyou<=(others=>(others=>'0')); -- initial value : 0
elsif clk'event and clk='1' then
xxxxxxxx
end if;
or
if reset ='1' then
loop_init:
for i in 1 to 100 loop
loveyou(i)<="00000000"; -- initial value : 0
end loop;
elsif clk'event and clk='1' then
xxxxxxxx
end if;