From: "pichotjm" <pichotjm at
free.fr>
I spent my week-end to write a report on the restoration of the
early French
computer ODP-505. This computer is built with germanium transistors
and has
a core memory.
|Thank you that is very interesting.
|
|I have looked on the 'Big List' to find the date it was first sold
|but could not find it. Google only brings up pages in the French
|language. Could you please give us the year?
It is difficult for me to give a precise date. I don't have any
manufacturing notes/schematics about this machine. Published computer lists
indicate 1965. But they don't know my work. It seems that the machine began
a military career, before a commercial one. (My machine has a military
color, and a customs seal)And I think that the 1965 date is only for
commercial use (not reserved to military).Date codes on PCBs range from 1962
to 1964. It's why I think 1964. But the machine was used for manufacturing
problems debugging / ECN. 1964 may be the date of the last ECN... So the
date is between 1962 and 1965.|It is tiny compared with my Germanium machine
(ICT 1301) which weighs
|five tons. It has the same clock speed but is quite a bit slower, so
|I guess it is earlier than mine. But maybe the emphasis of the design
|was miniaturisation and the designers traded speed for size.
|
|Roger Holmes
|(Kent, England)What is the manufacturing date of your ICT 1301?I have a
earlier machine from the same company SEREL, named OA-1001. Built in
1959/1960.I need to restore it. It lays on the floor (horizontal
position)... The blue one
here:http://pichotjm.free.fr/Serel/Photos/Photos.htmlI will start restoring
next month (with the Sun!)
RegardsJM PICHOT