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MERGE COMMAND
19.1
-
Use
Memorq
Location
1
o
o
6
0
0
8
F
0
F
0
F
12222222222222222222222211111111
i2222222222222222222222211111111
12222222222222222222222211111111
: ... Overlayed <name
1~
1
1
2
:3
0
F
0
F
33333333~
33333333;
33333333:
.. Start
or
<dname~
End
o~
<dname~
.... :
The
numbe~s
in the body of the
~ectangle
above indicate
the
data
OT
the
respective
<name
i~
Tile.
Thus,
"2"
indicates
the data of <name
2)O~
etc.
BetUleen locations $600
and $7FF,
the data of <name
2~
is
seen.
It
overlayed
any
information
put into
<dname~
by
<name
1/.
Since none oT the
<name
i~
Tiles spanned the addresses
from
$1000
to
$11FF,
inclusive,
that
part
oT
<dname~
is initializeo to
binar~
zeroes.
I t
should be noted that programs from
memo~y-image
riles
loaded
into
memory
are alUlays a multiple OT eight bytes in
length.
This is
a
function
of
the
diskette
contToller.
Regardless
of the actual data
aT a
file, a multiple of ei'ght
bytes
~ill
al~ays
be loaded.
This fact must
be
kept in
mind
~hen
merging flles
~hich
span
memo~~
locations that
a~e
close
together.
Memo~y-image
~iles
have
associated
with
their
load
information
a
starting
execution address.
Ir
no
<options~
~ield
is
speciTied on the MERGE command
line,
<dname~
will
have
the
sta~ting
execution
add~~ss
oT <name
1~
assigned to
it; however. as can be seen
from
the
above
example,
this
default
execution
address
can be meaningless.
An explicit
starting execution address can be specified in the
<options~
field as a one to four digit hexadecimal number.
The address
must lie within the range
of
memory
addresses
spanned
by
<dname:>.
19.1.3 Other
options
The
"W" option is used to allow the destination file to
be
overwritten
if
its
rile
name
already
exists;
the
"OVERWRITE"
prompt
is
not displayed and MERGE
per~orms
its
expected
~unction.
Ir the "W" option
is
~ot
used,
the
MERG~
command
will
prompt
the
operator
before
overw~iting
the
destination file.
The "W" option is not valid
if
<n~me
1~
is
a
memor~-image
file because the destination rile cannot exist
Page
.--.
19-04
\
I
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