Apple IIe - Page 303

Appendix
I
303
GETLN1
($FD6F/
64879)
A=
--
X
=length
of
input
Y
=
--
GETLN1
is
the
same
as
GETLN,
except
that
no
prompt
is
displayed.
If
the
input
line
is
cancelled,
either
because
of
too
many
backspaces
or
a
CONTROL-X
,
then
GETLN
wi
ll
be
exe-
cuted
using
the
prompt
in
location
$33.
HOME
($FC58/ 64600)
A = - -
X = - -
Y =
--
HOME
clears
the
screen and
positions
the
cursor
in
the
upper
left
corner
of
the
screen.
IOREST
($FF3F
/ 65343)
A=??
X =
??
Y =
??
IOREST
restores
the
6502's
internal
registers
to
the
values stored
in
locations
$45
to
$49.
IOSAVE
(FF4A
/ 64354) A=?? X
=??
Y =--
IOSAVE
stores
the
contents
of
the
6502's
registers
into
locations
$45
through
$49.
KEVIN
($FD1B/
64795)
A =
inputted
key X =
--
Y =
--
KEYi N pauses
for
a keypress and
then
stores
the
key
in
the
accumulator
. KEVIN also
randomizes
the
random
number
seed
at
locations
$4E
and
$4F.
MOVE
($FE2C
/ 65048)
A
=??
X =
--
Y =
--
MOVE
is
identical
to
the
monitor
's
move
s
ubroutine
.
MOVE
get
s
its
argument
from
:
•
$42-$43
•
$3C-$3D
•
$3E-$3F
destination
address
starting source address
ending
source address
PRBL2
($F94A/ 63818) A =
--
X =
??
Y
=
--
PRBL2
outputs
from
1to256
blanks
to
the
current
output
device
.
The
X-register
should
be
loaded
with
the
number
of
blanks
to