RISC OS character set

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)

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
0x NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI
1x DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US
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 € Ŵ ŵ ◰ 🯀 Ŷ ŷ 87 ⇦ ⇨ ⇩ ⇧ … ™ ‰ •
9x ‘ ’ ‹ › “ ” „ – — − Œ œ † ‡ fi fl
Ax  SP  ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ SHY ® ¯
Bx ° ± ² ³ ´ µ · ¸ ¹ º » ¼ ½ ¾ ¿
Cx À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï
Dx Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß
Ex à á â ã ä å æ ç è é ê ë ì í î ï
Fx ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ
  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 set[6]
0 1 2 3 4 5 6 7 8 9 A B C D E F
0x NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI
1x DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US
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 Ŵ Ŷ Ẃ İ ŵ ŷ ẃ … € ⁴ ™ ı ⁄ ƒ ‰ •
9x ‘ ’ ‹ › “ ” „ – — − Œ œ † ‡ fi fl
Ax NBSP ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ SHY ® ¯
Bx ° ± ² ³ ´ µ · ¸ ¹ º » ¼ ½ ¾ ¿
Cx À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï
Dx Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß
Ex à á â ã ä å æ ç è é ê ë ì í î ï
Fx ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ
  Differences from RISC OS

Code page layout (TRC)

TRC character set[citation needed]
0 1 2 3 4 5 6 7 8 9 A B C D E F
0x NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI
1x DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US
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 ←→ Ẃ İ ŵ ŷ ẃ … € ⁴ ™ ı ⁄ ƒ ‰ •
9x ‘ ’ ‹ › “ ” „ – — − Œ œ † ‡ fi fl
Ax NBSP ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ SHY ® ¯
Bx ° ± ² ³ ´ µ · ¸ ¹ º » ¼ ½ ¾ ¿
Cx À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï
Dx Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß
Ex à á â ã ä å æ ç è é ê ë ì í î ï
Fx ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ

References

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

Further reading

  • "Table D: Character sets". Technical Support: Programmer's Reference Manual. 3QD Developments Ltd. 2015-11-03. Retrieved 2017-02-22.
  • "Appendix H: Character sets". RISC OS 3.7 User Guide. 3QD Developments Ltd. 2015-11-03 [1997-01-20]. Retrieved 2017-02-22.
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