8 ▁for ▁the ▁At ari ▁ST ▁and ▁Am iga ▁home ▁computers . ▁Ex cept ▁for ▁the ▁music , ▁which ▁was ▁done ▁by ▁Dave ▁L owe , ▁the ▁At ari ▁ST ▁version ▁was ▁done ▁entirely ▁by ▁Arch er ▁Mac Le an . ▁He ▁used ▁the ▁bitmap ▁editor ▁Ne o Ch rome ▁to ▁draw ▁background ▁graphics ▁and ▁spr ites . ▁C oding ▁was ▁done ▁in ▁assemb ler ▁on ▁a ▁PC - based ▁development ▁system ▁that ▁cross - comp iled ▁the ▁ 8 0 0 ▁K Bytes ▁of ▁source ▁code ▁in ▁seven ▁seconds ▁and ▁transferred ▁the ▁program ▁to ▁the ▁RAM ▁of ▁the ▁At ari ▁ST ▁via ▁a ▁parallel ▁cable . ▁Development ▁took ▁six ▁months . ▁The ▁subsequent ▁port ▁to ▁Am iga ▁took ▁just ▁seven ▁days ▁thanks ▁to ▁Mac Le an ▁avoid ing ▁operating ▁system ▁calls ▁as ▁much ▁as ▁possible . ▁ ▁Another ▁International ▁Kar ate ▁Del ux e ▁game ▁( AK A ▁I K ++) ▁was ▁ready ▁but ▁un re leased ▁for ▁the ▁At ari ▁ST ▁and ▁Am iga ▁in ▁ 1 9 8 7 / 1 9 8 8 . ▁ ▁It ▁was ▁also ▁released ▁by ▁Activ ision ▁in ▁ 1 9 8 8 ▁for ▁the ▁Com mod ore ▁ 6 4 ▁under ▁the ▁title ▁Ch op ▁' N ▁Drop . ▁A ▁version ▁for ▁Am iga ▁CD 3 2 ▁was ▁released ▁in ▁ 1 9 9 4 . ▁ ▁International ▁Kar ate ▁+ ▁Gold ▁is ▁an ▁una ut hor ized ▁release ▁of ▁International ▁Kar ate ▁+ ▁that ▁supports ▁cont rolling ▁of ▁the ▁ 3 rd