On Fri, Jan 20, 2012 at 12:35:26AM +0100, Rob Clarke wrote: >One observation is that a thread length of 9.5 mm is too long for >holding the MB to the bottom shell on the 64 & plus/4. It noticeably >deforms the plastic on the underside of the shell. Having looked at the >alternatives, 6.5mm screws seem to be the next smallest standard size >available. Right. In the breadbox Vic-20 and C64, the motherboard screws are shorter than the 3 case screws. I have come across some C64s where someone had apparently used the too long case screws to attach the motherboard. >There is now a DIN and ISO standard for the type of screws required; >DIN 7981 / ISO 7049 which defines standards for 'Cross Recessed Pan >Head Tapping Screws' - nice! If ISO assigns the numbers in chronological order, 7049 could have existed back then. For example, ISO 8859-1 (the 8-bit character standard known as Latin-1) was first published in 1985 or so. (It was chosen for the Commodore Amiga. It is based on the DEC Multilingual character set found in the VT-220. Microsoft embraced and extended it as Code Page 1252. Now it is finally on the way to extinction, superceded by UTF-8.) Marko Message was sent through the cbm-hackers mailing listReceived on 2012-01-20 08:00:03
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