5.
1
Monitor
Commands
The
monitor
program starts immediately after
the
power is turned
on
and awaits
input
of
a
monitor
command. The
monitor
commands are listed below. In this chapter, I
CRI
indicates
that
the
carriage
return
key is
to
be pressed.
L command
P command
Loads cassette tape files
into
memory.
Outputs
the
specified character string
to
the printer. (Print)
M command Changes
the
contents
of
memory. (Memory correction)
J command
......
Transfers control
to
the
specified address. (Jump)
S command
V command
#command
B command
Saves
the
contents
of
the specified
memory
block
to
cassette tape. (Save)
Compares
the
contents
of
cassette tape with the contents
of
memory.
Transfers control
to
the RAM area.
Makes the bell sound every time a key
is
pressed. Executing this command
again stops
the
bell.
• Configuration
of
the
monitor
work area
The configuration
of
the
monitor
work area from $1000
to
$11
FF
is
shown below.
$0000
Monitor
$1000
Stack area
$10
F O
Cassette
tape
header area
$1
1
70
Variable area
$
11A
3
Key
input
data area
$1200
Free area
Note: The
ROM
monitor
described in this chapter
is
not
the same as the
monitor
function
of
the
BASIC
interpreter.
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