HP Roman

HP Roman is a family of single byte character encodings supporting several Latin script based languages of Europe. It was originally introduced by Hewlett-Packard around 1978 as 7- and 8-bit HP Roman Extension for some of their computer terminals and printers. Early versions of the 8-bit variant were also used by some HP workstations in 1978/1979. Several revisions led to more characters being added before the 8-bit variant of the character set became officially known as HP Roman-8 in 1983. Soon later, this became the default character set of the HP-UX operating system and the page description language PCL for inkjet and laser printers in 1984. The character set was again expanded in 1985. A modified adaptation of the 1984 definition of Roman-8 was used in the HP Portable series of computers, whereas a derivation of the updated 1985 definition of Roman-8 was used in several early RPL calculators and corresponding thermal printers since 1986. The latest off-spring of the family is HP Roman-9, which was introduced in 1999 to include the euro sign. PCL Ventura International is based on HP Roman-8. ==Character set==

Roman Extension The character set was originally introduced by Hewlett-Packard as extended ASCII 7-bit codepage named HP Roman Extension, The following table shows the 1982 version; a current variant is shown in the Roman-8 section below. The table assumes 8-bit mode is used; if not, subtract 128 (8016) from the character code. Roman-8 HP Roman-8 is an 8-bit single byte character encoding that is mainly used on HP-UX • hp-roman8: the IETF/IANA name; many others have followed suit.Since IANA character set identifiers aren't case-sensitive, • Roman 8 • HP_ROMAN8 • ROMAN8 • roman8 • Code page 1051 or IBM-1051. Modified Roman-8 In 1984, Hewlett-Packard introduced the HP 110 / HP Portable personal computer followed by the HP 110 Plus / HP Portable Plus in 1985. In "HP mode" they supported a derivation of the 1984 revision of 8-bit HP Roman-8 (still lacking the six additional characters at code points 177 to 178 and 242 to 245, and with code point 228 still resembling a stroked d (đ)), but with 32 additional graphical symbols at code points 128 to 159, including a rich set of box-drawing characters. In 1986, Hewlett-Packard introduced the HP-18C calculator and HP 82240A thermo printer, which internally used an extended variant of the 1985 revision of the 8-bit HP Roman-8 character set (now with the six additional characters defined and with code point 228 already changed to an eth (ð)), but with the code points 127 (0x7F) and 160 (0xA0) as well as the control codes in the range 128 to 159 (0x80 to 0x9F) being replaced by additional displayable characters, some of which were derived from the HP-41C/CV/CX's FOCAL character set and others incorporated into the revised FOCAL character set used by the HP-42S calculator, although at different code points. On the HP-28 series, characters above 147 (0x93) could not be displayed on the calculator, only be printed. There is no official code point definition for the euro sign in this modified character set. The HP 49/50 series of calculators use a different character set based on ECMA-94 / ISO 8859-1 which includes the euro symbol. Roman-9 HP Roman-9 (also known as HP Roman 9, hp-roman9, roman9 or R9) is a slight modification of the 8-bit HP Roman-8 character set where the general currency sign (¤) at code point 186 (0xBA) was replaced by the euro sign (€). It was introduced in early 1999. As of 2017, HP Roman-9 still has no known code page number assigned to it. ==See also==