n32
bit hex data pattern (pattern=value).
u13 internal data patterns cycled through for
each write/read pass.
nIOT
test pattern (pattern=iot).
nIncrementing
data pattern:
u0, 1, 2, … 255 (pattern=incr)
nPattern
string (pattern=“string”)
nPattern
file (pf=filename)
uwhole file used as pattern data.