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==Code page assignments==
In North American [[IBM-compatible PC]]s, the hardware code page of the display adapter is typically [[code page 437]].<ref name="Elliott_2005_MDA"/> However, various (Eastern) European, Arabic, Middle Eastern and Asian PCs used a number of other code pages as their hardware code page,<ref name="Paul_2001_CPSwitchFD"/> including [[code page 100]] ("Hebrew"),<ref name="Paul_2002-09-05"/> [[code page 151|151]] ("Nafitha Arabic"),<ref name="Paul_2002-12-04"/> [[code page 667|667]] ("[[Mazovia encoding|Mazovia]]"),<ref name="Paul_2001_CPSwitchFD"/><ref name="Fujitsu_1994_DL6400_DL6600"/> [[code page 737|737]] ("Greek"), [[code page 850|850]] ("Multilingual"), encodings like "[[Kamenický encoding|Kamenický]]",<ref name="Paul_2001_CPSwitchFD"/><ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1992_Flyer"/> "[[KOI-8]]", "[[MIK code page|MIK]]",<ref name="Fujitsu_1994_DL6400_DL6600"/> and others. Most display adapters support a single 8-bit hardware code page only.<ref name="Paul_2001_CPSwitchFD"/> The [[bitmap]]s were often stored in an [[EPROM]]<ref name="RBIL_61_INT15h_AX67C3h"/><ref name="Brown_2000_RBIL"/><ref name="Elliott_2005_MDA"/> in a [[DIP socket]].<ref name="Elliott_2005_MDA"/> At most, the hardware code page to be activated was user-selectable via [[jumper (computing)|jumper]]s<ref name="Derfler_1985"/> or [[CMOS setup]]. However, some of the display adapters designed for Eastern European, Arabic and Hebrew PCs supported multiple software-''switchable'' hardware code pages, also named '''font pages''',<ref name="Paul_2001_CPSwitchFD"/> selectable via I/O ports<ref name="Elliott_2005_MDA"/> or additional BIOS functions.<ref name="RBIL_61_INT15h_AX67C3h"/><ref name="Brown_2000_RBIL"/>
In contrast to this, printers frequently support several user-switchable character sets, often including various variants of the 7-bit [[ISO/IEC 646]] character sets such as [[code page 367]] ("[[ISO/IEC 646-US]] / [[ASCII]]"<ref name="Paul_2001_CPSwitchFD"/>), sometimes also a couple of 8-bit code pages like [[code page 437]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1990_P90"/><ref name="Epson_1991_GQ"/> [[code page 850|850]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1990_P90"/><ref name="Epson_1991_GQ"/> [[code page 851|851]],<ref name="Fujitsu_1994_DL6400_DL6600"/> [[code page 852|852]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1993_EPROMs"/> [[code page 853|853]],<ref name="Epson_1992_EPL-4300"/> [[code page 855|855]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1993_EPROMs"/> [[code page 857|857]],<ref name="Epson_1992_EPL-4300"/> [[code page 860|860]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1990_P90"/><ref name="Epson_1991_GQ"/> [[code page 861|861]],<ref name="Epson_1991_GQ"/> [[code page 863|863]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1990_P90"/><ref name="Epson_1991_GQ"/> [[code page 865|865]],<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1990_P90"/><ref name="Epson_1991_GQ"/> and [[code page 866|866]].<ref name="Fujitsu_1994_DL6400_DL6600"/><ref name="NEC_1993_EPROMs"/><ref name="FreeBSD_2016_1"/><ref name="FreeBSD_2016_2"/> Printers for the Eastern European or Middle Eastern markets sometimes support other locale-specific hardware code pages to choose from. They can be selected via [[DIP switch]]es or configuration menus on the printer, or via specific [[escape sequence]]s.<ref name="Paul_2001_CPSwitchFD"/><ref group="nb" name="Escape_sequence_Epson_NEC"/>
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<ref name="Hart_1985">{{cite journal |author-first1=Glenn A. |author-last1=Hart |author-first2=Jim |author-last2=Forney ||title=Video Board Reviews: Persyst BoB Color Adapter |journal=[[PC Magazine]] |date=1985-02-19 |pages=121-133 |url=https://books.google.de/books?id=Q2ad61ZUYQMC&pg=PA132}}</ref>
<ref name="Derfler_1985">{{cite journal |author-first=Frank J. |author-last=Derfler, Jr. |title=Expansion Options: Persyst Color Combo: Fit for an XT |journal=[[PC Magazine]] |date=1985-10-29 |url=https://books.google.de/books?id=jBnPebByBGkC&pg=PA195 |access-date=2016-11-23 |pages=196-199}}</ref>
<ref name="Elliott_2005_MDA">{{cite web |title=Monochrome Display Adapter: Notes |author-first=John |author-last=Elliott |date=2005-11-06 |url=http://www.seasip.info/VintagePC/mda.html |access-date=2016-11-23 |dead-url=no |archive-url=https://web.archive.org/web/20161123133459/http://www.seasip.info/VintagePC/mda.html |archive-date=2016-11-23 |quote=[…] Reading from port 03BAh returns vertical sync in bit 7, and a card ID in bits 6-4: 000: Hercules, 001: Hercules Plus, 101: Hercules InColor, 111: Unknown clone […] One card […] which appears to be a Hercules clone of Eastern European origin, has a further capability - two ROM fonts, selectable in software. These options are controlled in a similar manner to other extended features in the Hercules: Bit 2 of port 3BFh must be set to enable the feature, and then Bit 4 of port 3B8h selects which font to use. The card ID in bits 6-4 of port 03BAh has all three bits set. […]}}</ref>
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