# File: acorn [charlock_holmes-0.6.8 Documentation]

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### Class Index

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#------------------------------------------------------------------------------ # $File: acorn,v 1.5 2009/09/19 16:28:07 christos Exp $ # acorn: file(1) magic for files found on Acorn systems #

# RISC OS Chunk File Format # From RISC OS Programmer's Reference Manual, Appendix D # We guess the file type from the type of the first chunk. 0 lelong 0xc3cbc6c5 RISC OS Chunk data >12 string OBJ_ b, AOF object >12 string LIB_ b, ALF library

# RISC OS AIF, contains "SWI OS_Exit" at offset 16. 16 lelong 0xef000011 RISC OS AIF executable

# RISC OS Draw files # From RISC OS Programmer's Reference Manual, Appendix E 0 string Draw RISC OS Draw file data

# RISC OS new format font files # From RISC OS Programmer's Reference Manual, Appendix E 0 string FONT0 RISC OS outline font data, >5 byte x version %d 0 string FONT1 RISC OS 1bpp font data, >5 byte x version %d 0 string FONT4 RISC OS 4bpp font data >5 byte x version %d

# RISC OS Music files # From RISC OS Programmer's Reference Manual, Appendix E 0 string Maestror RISC OS music file >8 byte x version %d

>8 byte x type %d

# Digital Symphony data files # From: Bernard Jungen (bern8817@euphonynet.be) 0 string x02x01x13x13x13x01x0dx10 Digital Symphony sound sample (RISC OS), >8 byte x version %d, >9 pstring x named "%s", >(9.b+19) byte =0 8-bit logarithmic >(9.b+19) byte =1 LZW-compressed linear >(9.b+19) byte =2 8-bit linear signed >(9.b+19) byte =3 16-bit linear signed >(9.b+19) byte =4 SigmaDelta-compressed linear >(9.b+19) byte =5 SigmaDelta-compressed logarithmic >(9.b+19) byte >5 unknown format

0 string x02x01x13x13x14x12x01x0b Digital Symphony song (RISC OS), >8 byte x version %d, >9 byte =1 1 voice, >9 byte !1 %d voices, >10 leshort =1 1 track, >10 leshort !1 %d tracks, >12 leshort =1 1 pattern >12 leshort !1 %d patterns

0 string x02x01x13x13x10x14x12x0e >9 byte =0 Digital Symphony sequence (RISC OS), >>8 byte x version %d, >>10 byte =1 1 line, >>10 byte !1 %d lines, >>11 leshort =1 1 position >>11 leshort !1 %d positions >9 byte =1 Digital Symphony pattern data (RISC OS), >>8 byte x version %d, >>10 leshort =1 1 pattern >>10 leshort !1 %d patterns

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