Apple Apple-1 - Page 6

Note:
A
colon
in a
command
means
"start de-
positing
data
from
the most
recently
de-
posited
location, or
if
none,
then from
the
most recently opened
one.
11.
Examining
a
block, then
depositing
into
it.
USER
TYPES/
30.35 (RET)
MONITOR TYPES/
0030:
A0
Al
A2 A3 A4
A5 A6
USER
TYPES/
:B0
b Bl b B2
b B3 b B4 b B5
(RET)
Note:
New data
deposited
beginning
at most re-
cently
opened location
(30)
12. Run a
program
at
a
specified
address.
USER
TYPES/
10F0
R (RET)
MONITOR
TYPES/
10F0: A9
(contents)
Note:
The
cursor
is
left
immediately
to the
right
of
the
"A9";
it
is
not
returned
to the next
line.
13. Run
at the
most recently
examined
location.
USER
TYPES/
10F0 (RET)
MONITOR TYPES/
10F0: A9
USER
TYPES/
R
(RET)
14. Enter
a program
into
memory and
run
it
in
one
line.
USER TYPES/
40:
A9
b b
20
b
EF
b FF b
38
b
69
b
b 4C b
40
b R
(RET)
MONITOR
TYPES/
40: FF
(prior con-
tents of
40)
MONITOR
TYPES/
40:
FF
(prior
con-
tents
of
40)
15.
An
"on
line" error
correction.
USER
TYPES/
40:
Al
b
A2
b A3A4A5A6
b A7
(data
A6
will
be
loaded
in
location
42)
USER
TYPES/
40506070:
AA
(data
AA
will be
loaded
in
location
6070)
16. Useful
routines
in
monitor
which
can
be
accessed by
user
programs.
GETLINE:
location
FF1F:
monitor
entry
point
(jumping
to
FF1F
will
enter
monitor
and
echo
carriage
return.
You
can
then examine
memory
locations
with
the
monitor.
)
ECHO:
location
FFEF:
prints
one
byte
(ASCII)
(data
from "A"
(accumulator),
con-
tents of "A"
not
disturbed.
Example:
20
b
EF
b FF
(JRS
ECHO)).
PRBYTE
location
FFDC:
prints
one
byte
(HEX)
(data
from
"A",
contents
of
"A"
turbed.
)
dis-
PRHEX:
location FFE5:
prints
one
hex
digit
(data
from
four
least
significant
bits
of "A",
contents
of
"A"
disturbed.)
NOTE:
RAM
locations
0024
to 002B are
used
as index
pointers
by
the monitor,
and are invalid
for
user
use,
when
using monitor.
Also,
locations
0200
to
027F
are
used
as
input
buffer
storage, and
are
also
invalid
for
user use when
using the
monitor.
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