Roland U-20 Owner's Manual page 152

5. Utilities
*
I
About
the Display
(Display Pointer
The
display pointer indicates the position
in
the data
buffer occupied
by
the currently displayed data.
A
display
pointer of 256
indicates the
most recently received
data.
*
If
new
data
is
received during
RUN,
the display pointer
will
automaticaily be set to 256.
You
can use
[^ PART
[]
to
move
the display pointer
and
scroll
through
the entire data buffer to see the data that
was
previously
received.
Pointer
1
2
finally
disappears
6
bytes displayed
I 1
•
254 255 256
*-*:+:
*-H.:^F:
«-:+::+:
As new
data
is
received,
old
data
moves back
...
The most
recent
MIDI
data
is
located
at
pointer
256
I
Data
MIDI
data
is
displayed
in
hexadecimal
notation.
"
"
indicates that
MIDI
data has not yet
been
received.
One
of
the following
symbols
will
be displayed
in
front of
each
MIDI
data byte
to indicate
the type of data.
00
—
7F,
F7
(data bytes,
EOX)
80—
F6
(status
bytes)
F8
—
FE
(realtime
messages)
A.
B
"4"
or
""
indicate that data
exists in
the buffer before
or after
the displayed
data.
Immediately
after
MIDI data
is
received,
B
will
show
"^t:".
*
When
the
power
is
turned
on,
the monitor buffer
will
be empty,
and
the monitor
will
be
set to
STOP.
150