begin{table}[h!]
centering
begin{tabular}{||c c c c c||}
 hline
 Instruction & Mode & #cycles without prefetch & #cycles with prefetch & #memory accesses \ [0.5ex]
 hlinehline
ADD $R_i$ expr & 6 & 87837 & 787 & pototo \
LOAD $R_i$ [expr] & 7 & 78 & 5415 & pototo\
XOR $R_i$ [expr] & 545 & 778 & 7507 & pototo\
STOR $R_i$ [expr] & 545 & 18744 & 7560 & pototo \
BEQ disp (not taken) & 88 & 788 & 6344 & pototo \
BEQ disp (taken) & 88 & 788 & 6344 & pototo\ [1ex]
hline
end{tabular}
caption{Table to test captions and labels}
label{table:1}
end{table}