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Peripheral Interchange Program (PIP) was a utility to transfer files on and between devices on Digital Equipment Corporation's computers. It was first implemented on the PDP-6 architecture by Harrison "Dit" Morse early in the 1960s. It was subsequently implemented for DEC's operating systems for PDP-10, PDP-11, and PDP-8〔(OS/8 ), ''OS/8 System Reference Manual''〕 architectures. In the 1970s and 1980s Digital Research,Inc. implemented PIP on CP/M〔(CP/M ), ''CP/M Operating System Manual''〕 and MP/M.〔(MP/M ), ''MP/M Operating System User's Guide''〕 ==History== It is said that during development it was named ATLATL, which is an acronym for "Anything, Lord to Anything, Lord."〔(PIP ), ''The Jargon File''〕 This humorously described both its purpose as a device-independent file copying tool and the difficulties at the time of safely copying files between devices. The original PIP syntax was PIP destination←source /switches using the left-arrow character from the ASCII-1963 character set that the Flexowriter keyboards of the time used. As other terminals were introduced that used later versions of ASCII (without the left-arrow character), PIP allowed the syntax PIP destination=source The underscore (_) character, which was in the same ASCII character position that left-arrow had occupied, was still supported to separate the destination and source specifications. Source and destination were ''file specification'' strings. These consisted of a device name, typically 2 characters for device type such as DK (disk), LP (line printer), MT (magnetic tape), etc. and a unit number from 0 to 7, a colon (:), filename and extension. Copying was generally permitted between any file specification to any other where it made sense. As late as the mid 1980s, PIP was still in common use on TOPS-10, TOPS-20 and PDP-11 systems. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Peripheral Interchange Program」の詳細全文を読む スポンサード リンク
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