diskdef ibm-3740
  seclen 128
  tracks 77
  sectrk 26
  blocksize 1024
  maxdir 64
  skew 6
  boottrk 2
  os p2dos
end

diskdef 4mb-hd
  seclen 128
  tracks 1024
  sectrk 32
  blocksize 2048
  maxdir 256
  skew 1
  boottrk 0
  os p2dos
end

diskdef pcw
  seclen 512
  tracks 40
  sectrk 9
  blocksize 1024
  maxdir 64
  skew 1
  boottrk 1
  os 3
end

diskdef pc1.2m
  seclen 512
  tracks 80
  # this format uses 15 sectors per track, but 30 per cylinder
  sectrk 30
  blocksize 4096
  maxdir 256
  skew 1
  boottrk 0
  os 3
end

# CP/M 86 on 1.44MB floppies
diskdef cpm86-144feat
  seclen 512
  tracks 160
  sectrk 18
  blocksize 4096
  maxdir 256
  skew 1
  boottrk 2
  os 3
end

diskdef cf2dd
  seclen 512
  tracks 160
  sectrk 9
  blocksize 2048
  maxdir 256
  skew 1
  boottrk 1
  os 3
end

#amstrad: values are read from super block (special name hardcoded)

# Royal alphatronic
# setfdprm /dev/fd1 dd ssize=256 cyl=40 sect=16 head=2
diskdef alpha
  seclen 256
  tracks 40
  sectrk 32
  blocksize 2048
  maxdir 128
  skew 1
  boottrk 2
  os 2.2
end

# Apple II CP/M skew o Apple II DOS 3.3 skew
diskdef apple-do
  seclen 256
  tracks 35
  sectrk 16
  blocksize 1024
  maxdir 64
  skew 0
  boottrk 3
  os 2.2
end

# Apple II CP/M skew o Apple II PRODOS skew
diskdef apple-po
  seclen 256
  tracks 35
  sectrk 16
  blocksize 1024
  maxdir 64
  skew 0
  boottrk 3
  os 2.2
end

# MYZ80 hard drive (only works with libdsk, because it has a 256-byte header)
diskdef myz80
  seclen 1024
  tracks 64
  sectrk 128
  blocksize 4096
  maxdir 1024
  skew 1
  boottrk 0
  os 3
end

# Despite being Amstrad formats, CPC System and CPC Data don't have an Amstrad 
# superblock. You'll need to use libdsk to access them because the Linux 
# and Windows kernel drivers won't touch them.
diskdef cpcsys
  seclen 512
  tracks 40
  sectrk 9
  blocksize 1024
  maxdir 64
  skew 1
  boottrk 2
  os 3
end
diskdef cpcdata
  seclen 512
  tracks 40
  sectrk 9
  blocksize 1024
  maxdir 64
  skew 1
  boottrk 0
  os 3
end

# after being read in with no sector skew.
diskdef nigdos
  seclen 512
  # NigDos double sided disk format, 42 tracks * 2 sides
  tracks 84
  sectrk 10
  blocksize 2048
  maxdir 128
  skew 1
  boottrk 0
  # this format wastes half of the directory entry
  logicalextents 1
  os 3
end

diskdef epsqx10
  seclen 512
  tracks 40
  sectrk 20
  blocksize 2048
  maxdir 128
  skew 0
  boottrk 2
  os 2.2
end

diskdef ibm-8ss
  seclen 512
  tracks 40
  sectrk 8
  blocksize 1024
  maxdir 64
  skew 0
  boottrk 1
  os 2.2
end

diskdef ibm-8ds
  seclen 512
  tracks 40
  sectrk 8
  blocksize 1024
  maxdir 64
  skew 0
  boottrk 1
  os 2.2
end

diskdef electroglas
  seclen 512
  tracks 80
  sectrk 10
  blocksize 2048
  maxdir 256
  skew 0
  boottrk 1
  os 3
end

# IBM CP/M-86
# setfdprm /dev/fd1 sect=8 dtr=1 hd ssize=512 tpi=48 head=1
diskdef ibmpc-514ss
   seclen 512
   tracks 40
   sectrk 8
   blocksize 1024
   maxdir 64
   skew 1
   boottrk 1
   os 2.2
end

# IBM CP/M-86
# setfdprm /dev/fd1 sect=8 dtr=1 hd ssize=512 tpi=48
diskdef ibmpc-514ds
   seclen 512
   tracks 80
   sectrk 8
   blocksize 2048
   maxdir 64
   skew 0
   boottrk 2
   os 2.2
end

diskdef p112
  seclen 512
  tracks 160
  sectrk 18
  blocksize 2048
  maxdir 128
  skew 1
  boottrk 1
  os 3
end


diskdef p112a
  seclen 512
  tracks 160
  sectrk 18
  blocksize 2048
  maxdir 256
  skew 1
  boottrk 1
  os 3
end