le ▁body ▁attached ▁to ▁a ▁traditional ▁int ake ▁manifold ▁in ▁the ▁center ▁valley ▁of ▁the ▁ 5 . 0 ▁liter ▁( 3 0 2 ▁c id ) ▁engine . ▁ ▁C FI ▁was ▁available ▁on ▁all ▁Ford ▁vehicles ▁with ▁the ▁ 5 . 0   l ▁engine . ▁ ▁The ▁processor ▁was ▁designed ▁and ▁manufact ured ▁by ▁Motor ola ▁( now ▁Fre esc ale ). ▁ ▁It ▁featured ▁an ▁ 8 - bit ▁data ▁length , ▁a ▁ 1 0 - bit ▁instruction ▁length ▁and ▁a ▁ 1 3 - bit ▁address ▁length . ▁ ▁The ▁address ▁space ▁was ▁" p aged ", ▁meaning ▁you ▁could ▁not ▁directly ▁address ▁all ▁of ▁the ▁address ▁space ▁without ▁special ▁instructions . ▁ ▁There ▁were ▁ 4 ▁pages . ▁ ▁Page ▁ 0 ▁was ▁for ▁normal ▁( background ) ▁code . ▁Page ▁ 1 ▁was ▁for ▁interrupt ▁code . ▁Page ▁ 2 ▁was ▁also ▁for ▁background , ▁but ▁could ▁only ▁be ▁accessed ▁by ▁a ▁special ▁" J ump ▁Page " ▁instruction ▁from ▁page ▁ 0 . ▁Page ▁ 3 ▁was ▁used ▁to ▁store ▁paramet ric ▁(" cal ibration ") ▁data ▁or ▁additional ▁interrupt ▁level ▁code . ▁ ▁This ▁chip ▁was ▁never ▁sold ▁commer cially . ▁ ▁Like ▁E EC - I ▁and ▁- II , ▁all ▁code ▁was ▁written ▁in ▁assembly ▁language . ▁ ▁While ▁the ▁processor ▁ch ips ▁were ▁manufact ured ▁by ▁Motor ola , ▁the ▁modules ▁were ▁designed ▁and ▁assemble d ▁by ▁either ▁Motor ola , ▁T os hib a ▁or ▁Ford . ▁ ▁The