mapping = [
	# track 2
	{ :track => 2, :sector => 9, :head => 0, :size => 10 },
	{ :track => 2, :sector => 1, :head => 1, :size => 18 },

	# track 3
	{ :track => 3, :sector => 1, :head => 0, :size => 18 },
	{ :track => 3, :sector => 1, :head => 1, :size => 18 },

	# track 4
	{ :track => 4, :sector => 1, :head => 0, :size => 18 },
	{ :track => 4, :sector => 1, :head => 1, :size => 14 }
]

g_size = 0
g_skip = -1
mapping.each() do |obj|
	t = obj[:track]
	s = obj[:sector]
	h = obj[:head]
	size = obj[:size]

	g_size += size

	lba = (t * 2 + h) * 18 + s - 1

	offset = lba
	eoffset = offset + (size) - 1

	g_skip = lba unless(g_skip > -1)

	puts("track %d sector %d head %d size %02d -- LBA %04d-%04d (offset 0x%08X-0x%08X)" % 
		[t,s,h,size,offset,eoffset,offset*512,eoffset*512])
end

puts("skip=%d count=%d" % [g_skip,g_size])