#------------------------------------------------------------------------------
# $File: amigaos,v 1.20 2021/09/20 00:42:19 christos Exp $
# amigaos:  file(1) magic for AmigaOS binary formats:

#
# From [email protected] (Ignatios Souvatzis)
#
0       belong          0x000003fa      AmigaOS shared library
0       belong          0x000003f3      AmigaOS loadseg()ble executable/binary
0       belong          0x000003e7      AmigaOS object/library data
#
0       beshort         0xe310          Amiga Workbench
>2      beshort         1
>>48    byte            1               disk icon
>>48    byte            2               drawer icon
>>48    byte            3               tool icon
>>48    byte            4               project icon
>>48    byte            5               garbage icon
>>48    byte            6               device icon
>>48    byte            7               kickstart icon
>>48    byte            8               workbench application icon
>2      beshort         >1              icon, vers. %d
#
# various sound formats from the Amiga
# G=F6tz Waschk <[email protected]>
#
0       string          FC14            Future Composer 1.4 Module sound file
0       string          SMOD            Future Composer 1.3 Module sound file
0       string          AON4artofnoise  Art Of Noise Module sound file
1       string          MUGICIAN/SOFTEYES Mugician Module sound file
58      string          SIDMON\ II\ -\ THE      Sidmon 2.0 Module sound file
0       string          Synth4.0        Synthesis Module sound file
0       string          ARP.            The Holy Noise Module sound file
0       string          BeEp\0          JamCracker Module sound file
0       string          COSO\0          Hippel-COSO Module sound file
# Too simple (short, pure ASCII, deep), MPi
#26     string          V.3             Brian Postma's Soundmon Module sound file v3
#26     string          BPSM            Brian Postma's Soundmon Module sound file v3
#26     string          V.2             Brian Postma's Soundmon Module sound file v2

# The following are from: "Stefan A. Haubenthal" <[email protected]>
# Update:       Joerg Jenderek
# URL:          http://fileformats.archiveteam.org/wiki/Amiga_bitmap_font
# Reference:    http://mark0.net/download/triddefs_xml.7z/defs/f/font-amiga.trid.xml
#               https://wiki.amigaos.net/wiki/Graphics_Library_and_Text
# fch_FileID=FCH_ID=0x0f00
0       beshort         0x0f00
# skip some AVM powerline firmware images by check for positive number of font elements
# https://download.avm.de/fritzpowerline/fritzpowerline-1000e-t/other/fritz.os/fritz.powerline_1000ET_01_05.image
>2      ubeshort        >0              AmigaOS bitmap font
#!:mime application/octet-stream
!:mime  font/x-amiga-font
!:ext   font
# struct FontContents fch_FC; 1st fc_FileName [MAXFONTPATH=256]; ~ filename "/" fc_YSize
# like: topazb/6 suits/8  Excel/9e emerald/17 Franklin/23 DIAMONDS/60.8C
>>4     string          x               "%.256s"
# fc_YSize ~number after slash in fc_FileName; like: 6 7 8 9 11 12 16 17 21 23 45 60
>>260   beshort         x               \b, fc_YSize %u
# fch_NumEntries; number of FontContents elements like:
# 1 (often) 2 3 (IconCondensed.font tempfont.font) 4 (Franklin.font) 6 (mcoop.font)
>>2     ubeshort        >1              \b, %u elements
#>>2    beshort         x               \b, %u element
# plural s
#>>2    beshort         !1              \bs
# like: 6 7 8 9 11 12 16 17 21 23 45 60
#>>262  beshort         x               \b, FLAGS_STYLE
>>2     beshort         >1              \b, 2nd
# 2nd fc_FileName like: Franklin/36
>>>264  string          x               "%.256s"
>>2     beshort         >2              \b, 3rd
# 3rd fc_FileName like: Franklin/18
>>>524  string          x               "%.256s"
# URL:          http://fileformats.archiveteam.org/wiki/Amiga_bitmap_font
# Reference:    https://wiki.amigaos.net/wiki/Graphics_Library_and_Text
#               http://mark0.net/download/triddefs_xml.7z/defs/f/font-amiga-var2.trid.xml
# Note:         called by TrID "Amiga bitmap Font (var.2)"
# fch_FileID=TFCH_ID=0x0f02
0       beshort         0x0f02
# skip possible misidentified foo by check for positive number of font elements
>2      ubeshort        >0              AmigaOS bitmap font (TFCH)
#!:mime application/octet-stream
!:mime  font/x-amiga-font
!:ext   font
# struct TFontContents fch_TFC[]; 1st tfc_FileName [254]; ~ filename "/" fc_YSize
# like: Abbey/45 XScript/75 XTriumvirate/45
>>4     string          x               "%.254s"
# tfc_TagCount; including the TAG_END tag like: 4
>>258   ubeshort        x               \b, tfc_TagCount %u
# tfc_YSize ~number after slash in tfc_FileName; like: 45 75
>>260   beshort         x               \b, tfc_YSize %u
# tfc_Style; tfc_Flags like: 8022h 8222h
#>>262  ubeshort        x               \b, FLAGS_STYLE %#x
# fch_NumEntries; number of FontContents elements like: 1 (abbey.font) 2 (xscript.font xtriumvirate.font)
>>2     ubeshort        >1              \b, %u elements
>>2     beshort         >1              \b, 2nd
# 2nd tfc_FileName like: XScript/45 XTriumvirate/30
>>>264  string          x               "%.254s"
0       beshort         0x0f03          AmigaOS outline font
0       belong          0x80001001      AmigaOS outline tag
0       string          ##\ version     catalog translation
0       string          EMOD\0          Amiga E module
8       string          ECXM\0          ECX module
0       string/c        @database       AmigaGuide file

# Amiga disk types
#       display information like volume name of root block on Amiga (floppy) disk
0       name    adf-rootblock
# block primary type = T_HEADER (value 2)
>0x000  ubelong         !2              \b, type %u
# header_key; unused in rootblock (value 0)
>0x004  ubelong         !0              \b, header_key %u
# high_seq; unused (value 0)
>0x008  ubelong         !0              \b, high_seq %u
# ht_size; hash table size; 0x48 for flopies
>0x00c  ubelong         !0x48           \b, hash table size %#x
# bm_flag; bitmap flag, -1 means VALID
>0x138  belong          !-1             \b, bitmap flag %#x
# bm_ext; first bitmap extension block (Hard disks only)
>0x1A0  ubelong         !0              \b, bitmap extension block %#x
# name_len; volume name length; diskname[30]; volume name
>0x1B0  pstring         >\0             \b, "%s"
# first directory cache block for FFS; otherwise 0
>0x1F8  ubelong         !0              \b, directory cache block %#x
# block secondary type = ST_ROOT (value 1)
>0x1FC  ubelong         !1              \b, sec_type %#x
#
0       string          RDSK            Rigid Disk Block
>160    string          x               on %.24s
# URL:          http://fileformats.archiveteam.org/wiki/ADF_(Amiga)
#               https://en.wikipedia.org/wiki/Amiga_Fast_File_System
# Reference:    http://lclevy.free.fr/adflib/adf_info.html
# Update:       Joerg Jenderek
# Note:         created by ADFOpus.exe
#               and verified by `unadf -l TURBO_SILVER_SV.ADF`
0       string          DOS
# skip DOS Client Message Files like IPXODI.MSG DOSRQSTR.MSG
>3      ubyte           <8              Amiga
# https://reposcope.com/mimetype/application/x-amiga-disk-format
!:mime  application/x-amiga-disk-format
!:ext   adf
>>3     ubyte           0               DOS disk
>>3     ubyte           1               FFS disk
>>3     ubyte           2               Inter DOS disk
>>3     ubyte           3               Inter FFS disk
# For Fastdir mode the international mode is also enabled,
>>3     ubyte           4               Fastdir DOS disk
>>3     ubyte           5               Fastdir FFS dis
# called by TrID "Amiga Disk image File (OFS+INTL+DIRC)"
>>3     ubyte           6               Inter Fastdir DOS disk
# called by TrID "Amiga Disk image File (FFS+INTL+DIRC)"
>>3     ubyte           7               Inter Fastdir FFS disk
# but according to Wikipedia variants with long name support
#>>3    ubyte           6               long name DOS disk
#>>3    ubyte           7               long name FFS disk
# DOES NOT only work! Partly for file size  ~< FILE_BYTES_MAX=1 MiB defined in ../../src/file.h
#>>-0           offset  x               \b, %lld bytes
# Correct file size, but next lines are NOT executed
#>>-0           offset  901120          (DD 880 KiB floppy)
# 880 KiB Double Density floppy disk by characteristic hash table size 0x48 and T_HEADER=2
>>0x6E00C       ubelong 0x48
>>>0x6E000      ubelong 2               (DD 880 KiB)
# 1760 KiB High Density floppy disk (1802240 bytes) by characteristic hash table size 0x48
>>0xDC00C       ubelong 0x48
>>>0xDC000      ubelong 2               (HD 1760 KiB)
# Chksum; special block checksum like: 0 0x44ccf4c0 0x51f32cac 0xe33d0e7d ...
#>>4    ubelong         x               \b, CRC %#x
# Rootblock: 0 880 (often for DD and HD) 1146049280 (IMAGINE_1_0_DISK_01.ADF TURBO_SILVER_SV.ADF)
>>8     ubelong         >0              \b, probably root block %d
# bootblock code
>>12    quad            !0              \b, bootable
# assembler instructions: lea exp(pc),a1; moveq 25h,d0; jsr -552(a6)
>>>12   ubequad =0x43fa003e70254eae     AmigaDOS 3.0
>>>12   default x
>>>>12  ubequad !0x43fa003e70254eae     %#llx..
# 880 KiB Double Density floppy disk (901120 bytes)
>>0x6E00C       ubelong 0x48
>>>0x6E000      ubelong 2
>>>>0x6E000     use                     adf-rootblock
# 1760 KiB High Density floppy disk (1802240 bytes)
>>0xDC00C       ubelong 0x48
>>>0xDC000      ubelong 2
>>>>0xDC000     use                     adf-rootblock
# 1 MiB hard disc by test for T_HEADER=2 and header_key=0=high_seq
>>0x80000       ubelong 2
>>>0x80004      quad    0
>>>>0x80000     use                     adf-rootblock
# 2 MiB hard disc; only works if in ../../src/file.h FILE_BYTES_MAX is raised to 2 MiB
#>>0x100000     ubelong x               2 MiB TEST
#>>0x100000     ubelong 2               \b, 2 MiB hard disc rootblock
#>>>0x100000    use                     adf-rootblock
0       string          KICK            Kickstart disk

# From: Alex Beregszaszi <[email protected]>
0       string          LZX             LZX compressed archive (Amiga)

# From: Przemek Kramarczyk <[email protected]>
0       string          .KEY            AmigaDOS script
0       string          .key            AmigaDOS script

# AMOS Basic file formats
# https://www.exotica.org.uk/wiki/AMOS_file_formats
0       string          AMOS\040Basic\040       AMOS Basic source code
>11     byte            =0x56                   \b, tested
>11     byte            =0x76                   \b, untested
0       string          AMOS\040Pro             AMOS Basic source code
>11     byte            =0x56                   \b, tested
>11     byte            =0x76                   \b, untested
0       string          AmSp                    AMOS Basic sprite bank
>4      beshort         x                       \b, %d sprites
0       string          AmIc                    AMOS Basic icon bank
>4      beshort         x                       \b, %d icons
0       string          AmBk                    AMOS Basic memory bank
>4      beshort         x                       \b, bank number %d
>8      belong&0xFFFFFFF        x               \b, length %d
>12     regex           .{8}                    \b, type %s
0       string          AmBs                    AMOS Basic memory banks
>4      beshort         x                       \b, %d banks

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