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RISC OS character set

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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.

Code page layout (standard)

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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".[1] At 0x87 is an unusual character that is a subscript 8 followed by a superscript 7.[1] It is not proposed for Unicode.[2] At 0x88, 0x89, 0x8A, and 0x8B are left, right, up, and down bubble arrows for window scrollbars.[1]

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

RISC OS character set[1] [3] [4] [5]
0 1 2 3 4 5 6 7 8 9 A B C D E F
2x  SP  ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ \ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~ DEL
Ax  SP  ¡ ¢ £ ¤ \ ¦ § ̈ © a « ¬ SHY ® ̄
  Differences from ISO/IEC 8859-1

Code page layout (Electronic Font Foundry 1.1)

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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 set[6]
0 1 2 3 4 5 6 7 8 9 A B C D E F
2x  SP  ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ \ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~ DEL
  Differences from RISC OS

Code page layout (TRC)

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TRC character set[citation needed ]
0 1 2 3 4 5 6 7 8 9 A B C D E F
2x  SP  ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ \ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~ DEL
8x α ←→ İ ŵ ŷ ... 4 TM ı ƒ

References

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  1. ^ a b c d e Avis, Ed (2001年03月08日). "Acorn RISC OS". Archived from the original on 2020年08月06日. Retrieved 2020年03月30日.
  2. ^ "7. Characters not proposed", L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS (PDF), 2019年01月04日
  3. ^ "ReadMe.txt" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019年01月04日
  4. ^ "RISCOSV.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019年01月04日
  5. ^ "RISCOSI.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019年01月04日
  6. ^ "RISCEFF.TXT" (PDF), L2/19-025: Proposal to add characters from legacy computers and teletext to the UCS, 2019年01月04日

Further reading

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Early telecommunications
ISO/IEC 8859
Bibliographic use
National standards
ISO/IEC 2022
Mac OS Code pages
("scripts")
DOS code pages
IBM AIX code pages
Windows code pages
EBCDIC code pages
DEC terminals (VTx)
Platform specific
Unicode / ISO/IEC 10646
TeX typesetting system
Miscellaneous code pages
Control character
Related topics

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