Heathkit H9 - Special Function Keys

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Page5
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AUTO CARRY
When
this key
is
pushed
in, the cursor
automatically
goes
to the
beginning of
the next
line
after
a
full
line of
text
is typed.
At the end of
the bottom
line of
text, the
cursor will
start over at the beginning of the first line
fhome
position),
providing
the Terminal is not in
scroll mode
(SCROLL
key released). Also, refer to
"Hold
Screen"
on
Page 8.
SHORT FORM
When this key is
pushed in,
the display format is
changed from twelve lines
of 80 characters
fkey
re-
leased) to four
columns
-
each column
consisting of
twelve lines of 20
characters. Short
form is
useful for
writing
programs
in
machine language
where
entries
are
short.
SCROtt
When this key
is
pushed
in, and after the first twelve
lines
of text
are typed, the first line is
erased
(scrolled
upwardJ and
lost. Each remaining
character
line
moves up
one
line
position
and the cursor moves to
the
bottom line. In
short
form,
the
left
column of
24o
characters
[12
lines
of
20
characters)
is
erased
and
lost. The remaining three columns move to the
left
one column
position,
and the cursor moves to the
right
column.
When
the SCROLL key
is released
(in
the non-scroll
position),
and after the
first
twelve
lines
of
text are typed, the cursor
returns
to and
flashes at the start
of
page position. Further
typed
entries will write over the existing text on the
first
line. Also, refer
to
"Hold Screen"
on
Page
8,
SPECIAL
FUNCTION
KEYS
RETURN
(Carriage
Return)
This
key moves the cursor
to the first character
posi-
tion
of
the line it is
currently
in and it transmits the
Return ASCII code
(control
M).
Return
can be written
into
a
RAM
location only
if
that
location
contains
a
space. That is, a carriage
return
will not write over any
other
character.
Return is
a non-displayable charac-
ter,
except
in
the
plot
mode.
LINE FEED
This key moves
the cursor down
one
line
and
it
transmits
the line
feed ASCII code
(control
)).
Line
feed does not write
into RAM and
it is not a display-
able
character, except
in the
plot
mode.
RUB OUT
This key transmits
an ASCII rub out code
(delete).
Rub
out
does not
write into RAM and
it
is
a non-
displayable
character,
except in the
plot
mode.
ESC
(Escape)
This
key
transmits
an ASCII
escape
code.
Escape does
not
write intoRAM
and
it is
a non-displayablecharac-
ter,
except in
the
plot
mode.
REPT
(Repeat)
When this
key is held in, along with another key,
it
will repeat the function
of
the
other
key at a
preset
rate
as long as both keys are held down. The
presettable
repeat rates
are
3.7-,
7.5-,
L5-, or
30-characters
per
second. If the baud rate that has been selected
is less
than the
repeat rate,
the
repeat function will
operate
at
the slower rate.