▁the ▁Com mod ore ▁Am iga ▁computer . ▁It ▁stores ▁a ▁L ONG ▁" view port ▁mode ". ▁This ▁lets ▁you ▁specify ▁Am iga ▁display ▁modes ▁like ▁" du al ▁play field " ▁and ▁" hold ▁and ▁modify ". ▁It ▁is , ▁not ▁surprising ly , ▁rare ▁outside ▁of ▁Am iga ▁games . ▁ ▁If ▁you ▁need ▁to ▁convert ▁or ▁display ▁files ▁that ▁might ▁contain ▁meaning ful ▁C AM G ▁ch unks , ▁see ▁the ▁' Not es ▁on ▁working ▁with ▁IL B M ▁files ' ▁below . ▁ ▁C MAP : ▁P alette ▁ ▁The ▁C MAP ▁chunk ▁contains ▁the ▁image ' s ▁p alette ▁and ▁consists ▁of ▁ 3 - byte ▁R GB ▁values ▁for ▁each ▁colour ▁used . ▁ ▁Each ▁byte ▁is ▁between ▁ 0 ▁and ▁ 2 5 5 ▁inclus ive . ▁ ▁The ▁chunk ▁is ▁ 3 ▁× ▁num Col ours ▁bytes ▁long . ▁ ▁The ▁number ▁of ▁colours ▁in ▁the ▁p alette ▁will ▁be ▁ 2 ▁^ ▁num Bit plan es . ▁This ▁chunk ▁is ▁optional ▁and ▁a ▁default ▁p alette ▁will ▁be ▁used ▁if ▁it ▁is ▁not ▁present . ▁ ▁It ▁is ▁possible ▁to ▁have ▁fewer ▁entries ▁than ▁expected ▁( e . g . ▁ 7 ▁colours ▁for ▁a ▁ 4 - plane ▁' 1 6 ▁colour ' ▁bitmap ▁for ▁example .) ▁ ▁Remember ▁that ▁if ▁this ▁has ▁an ▁odd ▁number ▁of ▁colours , ▁as ▁per ▁the ▁I FF ▁specification ▁the ▁chunk ▁will ▁be ▁p added ▁by ▁one ▁byte ▁to ▁make ▁it ▁an ▁even ▁number ▁of