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PATCH COMMAND
Element
<blanks>
<any:>
<cr)
<opcode>
<operand>
21.2 -- PATCH Command Set
Meaning
Any numb er of spacesl- inc
1 ud
i ng zero.
Any
character
besides
a
carriage
return
O~
a
close-pa~enthesis.
Carriage return.
Any valid
as~embly
language
mnemonic
as
specified
in
the
"M6800/M6801/M6805/M6809
Macro
AssembleT's
Reference
Manual";
no
space is allowed between the mnemonic
and th
e
ac c umu
lator des i gnator
(e.
g. ,
LDAA
is valid,
LDA A
is not>.
Only
val id
req,uires
an
is required,
as <any:>.
if
the
instruction
op erana.
I f
no
op
erand
the
<operand~
is treated
The
<operand:>
field,
format:
when required,
has the following
~#J<ar9>({+
or '-}<arg>J
or
C<arg>[{+
or -}<arg>J,
JX
wh
ere th
e
U#II
i
nd i cates immed iate ad dres sing
mod e
and
",
X"
indicates the indexed addressing mode.
The "+"
or "_"
allows
simple expressions to be used in the operand field.
Each
of
the
arguments
<arg>
can
be
one of the following kinds of
elements:
Page
21-13
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