1 2#------------------------------------------------------------------------------ 3# $File: acorn,v 1.5 2009/09/19 16:28:07 christos Exp $ 4# acorn: file(1) magic for files found on Acorn systems 5# 6 7# RISC OS Chunk File Format 8# From RISC OS Programmer's Reference Manual, Appendix D 9# We guess the file type from the type of the first chunk. 100 lelong 0xc3cbc6c5 RISC OS Chunk data 11>12 string OBJ_ \b, AOF object 12>12 string LIB_ \b, ALF library 13 14# RISC OS AIF, contains "SWI OS_Exit" at offset 16. 1516 lelong 0xef000011 RISC OS AIF executable 16 17# RISC OS Draw files 18# From RISC OS Programmer's Reference Manual, Appendix E 190 string Draw RISC OS Draw file data 20 21# RISC OS new format font files 22# From RISC OS Programmer's Reference Manual, Appendix E 230 string FONT\0 RISC OS outline font data, 24>5 byte x version %d 250 string FONT\1 RISC OS 1bpp font data, 26>5 byte x version %d 270 string FONT\4 RISC OS 4bpp font data 28>5 byte x version %d 29 30# RISC OS Music files 31# From RISC OS Programmer's Reference Manual, Appendix E 320 string Maestro\r RISC OS music file 33>8 byte x version %d 34 35>8 byte x type %d 36 37# Digital Symphony data files 38# From: Bernard Jungen (bern8817@euphonynet.be) 390 string \x02\x01\x13\x13\x13\x01\x0d\x10 Digital Symphony sound sample (RISC OS), 40>8 byte x version %d, 41>9 pstring x named "%s", 42>(9.b+19) byte =0 8-bit logarithmic 43>(9.b+19) byte =1 LZW-compressed linear 44>(9.b+19) byte =2 8-bit linear signed 45>(9.b+19) byte =3 16-bit linear signed 46>(9.b+19) byte =4 SigmaDelta-compressed linear 47>(9.b+19) byte =5 SigmaDelta-compressed logarithmic 48>(9.b+19) byte >5 unknown format 49 500 string \x02\x01\x13\x13\x14\x12\x01\x0b Digital Symphony song (RISC OS), 51>8 byte x version %d, 52>9 byte =1 1 voice, 53>9 byte !1 %d voices, 54>10 leshort =1 1 track, 55>10 leshort !1 %d tracks, 56>12 leshort =1 1 pattern 57>12 leshort !1 %d patterns 58 590 string \x02\x01\x13\x13\x10\x14\x12\x0e 60>9 byte =0 Digital Symphony sequence (RISC OS), 61>>8 byte x version %d, 62>>10 byte =1 1 line, 63>>10 byte !1 %d lines, 64>>11 leshort =1 1 position 65>>11 leshort !1 %d positions 66>9 byte =1 Digital Symphony pattern data (RISC OS), 67>>8 byte x version %d, 68>>10 leshort =1 1 pattern 69>>10 leshort !1 %d patterns 70