At 03:25 PM 2/10/98 +0000, you wrote: >Returning to electronics, could the hardware be replaced by say >banks of programmable logic chips or PICs? And where would one >find out the details of the original machines? The author I referred >to wrote that he did not wish to breech the official secrets act and >thus spend his remaining days in prison. Surely these old codes can't still be protected by laws, can they ? I thought that some of the books mentioned in this thread DID give details. Sean +--------------------------------+ | Sean Breheny | | Amateur Radio Callsign: KA3YXM | | Electrical Engineering Student | +--------------------------------+ Fight injustice, please look at http://homepages.enterprise.net/toolan/joanandrews/ Personal page: http://www.people.cornell.edu/pages/shb7 mailto:shb7@cornell.edu Phone(USA): (607) 253-0315