# ECSYS-4 format for the EC65K.
# Tracks are actually cylinders, 
# side 0 and then side 1 make a whole track.
#
diskdef ecsys-4
  seclen 1024
  tracks 40
  sectrk 10
  blocksize 2048
  maxdir 128
  skew 0
  boottrk 2
  # this format wastes half of the directory entry
  logicalextents 1
  os p2dos
end

diskdef ecsys-8
  seclen 1024
  tracks 80
  sectrk 10
  blocksize 2048
  maxdir 128
  skew 0
  boottrk 2
  os p2dos
end

# 8" format. Almost a standard format but the
# directory is on track 3 instead of on track 2.
#
diskdef ibm-osi
  seclen 128
  tracks 77
  sectrk 26
  blocksize 1024
  maxdir 64
  skew 6
  boottrk 3
  os 2.2
end