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Code page 437 is the character set of the original IBM PC (personal computer), or MS-DOS. It is also known as CP437, OEM 437,〔 PC-8,〔 or MS-DOS Latin US.〔 The set includes ASCII codes 32–126, extended codes for accented letters (diacritics), some Greek letters, icons, and line-drawing symbols. It is sometimes referred to as the "OEM font" or "high ASCII", or as "extended ASCII"〔 (one of many mutually incompatible ASCII extensions). In a strict sense, this character set was not conceived as a code page; it was simply the graphical glyph repertoire available in the original IBM PC. This character set remains the primary font in the core of any EGA and VGA-compatible graphics card. Text shown when a PC reboots, before any other font can be loaded from a storage medium, typically is rendered with this "Code Page".〔Systems available in Eastern European, Arabic, and Asian countries often use a different set. The designation "OEM", for "original equipment manufacturer", indicates that the "native" hardware character set supplied in ROM could be changed by the manufacturer to meet different markets.〕 Many file formats developed at the time of the IBM PC, such as .nfo, define this as the default encoding. ==Display adapters== The code page stored in ROM is also called the hardware code page. In Western PCs it typically defaults to code page 437, but various Eastern European PCs used a number of other code pages as hardware code page, sometimes user-selectable via jumpers or CMOS setup. Arabic and Hebrew PCs and printers even supported multiple software-switchable hardware code pages, also named font pages. The original IBM PC contained this font as a 9×14 pixels-per-character font stored in the ROM of the IBM Monochrome Display Adapter (MDA) and an 8×8 pixels-per-character font of the Color Graphics Adapter (CGA) cards. The IBM Enhanced Graphics Adapter (EGA) contained an 8×14 pixels-per-character version, and the VGA contained a 9×16 version. All these display adapters have text modes in which each character cell contains an 8-bit character code point (see details), giving 256 possible values for graphic characters. All 256 codes were assigned a graphical character in ROM, including the codes from 0 to 31 that were reserved in ASCII for non-graphical control characters. 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「Code page 437」の詳細全文を読む スポンサード リンク
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