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RISC OS character set
Character set was used in the Acorn Archimedes series

The Acorn RISC OS character set was used in the Acorn Archimedes series and subsequent computers from 1987 onwards. It is an extension of ISO/IEC 8859-1, similar to the Windows CP1252 in that many of the added characters are typographical punctuation marks.

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Code page layout (standard)

At 0x83 is a box with another box inside it on the top left-hand corner, meaning "resize window".1 At 0x84 is a 'bubble-writing' X, meaning "close window".2 At 0x87 is an unusual character that is a subscript 8 followed by a superscript 7.3 It is not proposed for Unicode.4 At 0x88, 0x89, 0x8A, and 0x8B are left, right, up, and down bubble arrows for window scrollbars.5

The following table shows the RISC OS character set. Each character is shown with a potential Unicode equivalent in the tooltip.

RISC OS character set6789
0123456789ABCDEF
0xNULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSI
1xDLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUS
2x SP !"#$%&'()*+,-./
3x0123456789:;<=>?
4x@ABCDEFGHIJKLMNO
5xPQRSTUVWXYZ[\]^_
6x`abcdefghijklmno
7xpqrstuvwxyz{|}~DEL
8x€Ŵŵ◰🯀Ŷŷ87⇦⇨⇩⇧…™‰•
9x‘’‹›“”„–—−Œœ†‡fifl
Ax SP ¡¢£¤¥¦§¨©ª«¬SHY®¯
Bx°±²³´µ·¸¹º»¼½¾¿
CxÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
DxÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
Exàáâãäåæçèéêëìíîï
Fxðñòóôõö÷øùúûüýþÿ
  Differences from ISO/IEC 8859-1

Code page layout (Electronic Font Foundry 1.1)

The Homerton font, a clone of Helvetica, does not have these characters. EFF, a third-party supplier of RISC OS outline fonts, has a different, but similar character set. This RISC OS Latin-1 character set was used by Electronic Font Foundry.

RISC OS EFF character set10
0123456789ABCDEF
0xNULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSI
1xDLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUS
2x SP !"#$%&'()*+,-./
3x0123456789:;<=>?
4x@ABCDEFGHIJKLMNO
5xPQRSTUVWXYZ[\]^_
6x`abcdefghijklmno
7xpqrstuvwxyz{|}~DEL
8xŴŶẂİŵŷẃ…€⁴™ı⁄ƒ‰•
9x‘’‹›“”„–—−Œœ†‡fifl
AxNBSP¡¢£¤¥¦§¨©ª«¬SHY®¯
Bx°±²³´µ·¸¹º»¼½¾¿
CxÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
DxÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
Exàáâãäåæçèéêëìíîï
Fxðñòóôõö÷øùúûüýþÿ
  Differences from RISC OS

Code page layout (TRC)

TRC character set
0123456789ABCDEF
0xNULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSI
1xDLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUS
2x SP !"#$%&'()*+,-./
3x0123456789:;<=>?
4x@ABCDEFGHIJKLMNO
5xPQRSTUVWXYZ[\]^_
6x`abcdefghijklmno
7xpqrstuvwxyz{|}~DEL
8xα←→Ẃİŵŷẃ…€⁴™ı⁄ƒ‰•
9x‘’‹›“”„–—−Œœ†‡fifl
AxNBSP¡¢£¤¥¦§¨©ª«¬SHY®¯
Bx°±²³´µ·¸¹º»¼½¾¿
CxÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
DxÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
Exàáâãäåæçèéêëìíîï
Fxðñòóôõö÷øùúûüýþÿ

Further reading

References

  1. Avis, Ed (2001-03-08). "Acorn RISC OS". Archived from the original on 2020-08-06. Retrieved 2020-03-30. https://web.archive.org/web/20200806211900/http://sofia.nmsu.edu/~mleisher/Software/csets/RISCOS.TXT ↩

  2. Avis, Ed (2001-03-08). "Acorn RISC OS". Archived from the original on 2020-08-06. Retrieved 2020-03-30. https://web.archive.org/web/20200806211900/http://sofia.nmsu.edu/~mleisher/Software/csets/RISCOS.TXT ↩

  3. Avis, Ed (2001-03-08). "Acorn RISC OS". Archived from the original on 2020-08-06. Retrieved 2020-03-30. https://web.archive.org/web/20200806211900/http://sofia.nmsu.edu/~mleisher/Software/csets/RISCOS.TXT ↩

  4. "7. Characters not proposed", L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS (PDF), 2019-01-04 https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf ↩

  5. Avis, Ed (2001-03-08). "Acorn RISC OS". Archived from the original on 2020-08-06. Retrieved 2020-03-30. https://web.archive.org/web/20200806211900/http://sofia.nmsu.edu/~mleisher/Software/csets/RISCOS.TXT ↩

  6. Avis, Ed (2001-03-08). "Acorn RISC OS". Archived from the original on 2020-08-06. Retrieved 2020-03-30. https://web.archive.org/web/20200806211900/http://sofia.nmsu.edu/~mleisher/Software/csets/RISCOS.TXT ↩

  7. "ReadMe.txt" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019-01-04 https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf ↩

  8. "RISCOSV.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019-01-04 https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf ↩

  9. "RISCOSI.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019-01-04 https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf ↩

  10. "RISCEFF.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019-01-04 https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf ↩