4.58 set-DEFINEANASSEMBLERVARIABLE 4.58.1	Syntax
Preferred:
label set expr Supported: label .set expr
4.58.2	Description
label is assigned the value of the valid MPASM assembler expression specifi=
ed by expr. The set directive is functionally equivalent to the equ directi=
ve except that set values may be subsequently altered by other set directiv=
es.
4.58.3	Usage
This directive is used in the following types of code: absolute or relocata=
ble. For information on types of code, see Section 1.6 =93Assembler Operati=
on=94.
Because set directive values may be altered by later set directives, set is=
 particularly useful when defining a variable in a loop (e.g., a while loop=
..)
4.58.4	See Also
equ variable while
4.58.5
area width length area length
4.58.6
Simple Example
set 0 set 0x12 set 0x14 set length * width set length + 1
Application Example - set/equ
This example shows the usage of the set directive, used for creating symbol=
s which may be used in MPASM assembler expressions only. The symbols create=
d with this directive do not occupy any physical memory location on the mic=
rocontroller.
#include p16f877a.inc
perimeter set 0 area	set 0
;Include standard header file ;for the selected device.
;The label 'perimeter' is ;assigned value 0. ;The label 'area' is assigned =
;value 0.
The value assigned by the set directive may be reassigned later.
lngth wdth
equ 50H equ 25H
;The label 'lngth' is assigned ;the value 50H. ;The label 'wdth' is assigne=
d ;the value 25H.
DS33014K-page 108	=A9 2009 Microchip Technology Inc.Directives
The value assigned by the equ directive may not be reassigned later.
perimeter set 2*(lngth+wdth) ;Both 'perimeter' and area	set lngth*wdth	;'ar=
ea' values are
end
4.59 space-INSERTBLANKLISTINGLINES 4.59.1	Syntax
Preferred:
space expr Supported: spac expr
4.59.2	Description and Usage
Insert expr number of blank lines into the listing file. This directive is =
used in the following types of code: absolute or relocatable. For
information on types of code, see Section 1.6 =93Assembler Operation=94. 4.=
59.3	See Also
list
4.59.4	Simple Example
space 3 ;Inserts three blank lines
4.60 subtitle-SPECIFYPROGRAMSUBTITLE 4.60.1	Syntax
Preferred:
subtitle "sub_text" Supported:
stitle "sub_text" subtitl "sub_text"
4.60.2	Description and Usage
sub_text is an ASCII string enclosed in double quotes, 60 characters or les=
s in length. This directive establishes a second program header line for us=
e as a subtitle in the listing output.
This directive is used in the following types of code: absolute or relocata=
ble. For information on types of code, see Section 1.6 =93Assembler Operati=
on=94.
4.60.3	See Also
list title
4.60.4	Simple Example
subtitle "diagnostic section"
;reassigned.
On Jun 22, 2011, at 9:21 AM, smplx wrote:

>=20
> Most assemblers I have used would let you use SET in this way. I don't us=
e=20
> microchip's assembler though so I couldn't say for sure that it behaves=20
> like the majority of others.
>=20
> HOWEVER - from my experience, I would suggest that you look around your=20
> code to see if "link" is SET anywhere else. What could be happening is=20
> that "link" is actually being left with some other value in it AFTER it=20
> has been SET to "$".
>=20
> Try changing the symbol name from "link" to "link314156" and see if your
> problem goes away.
>=20
> Also are you sure that "SET" is a directive for this assembler and not a=
=20
> macro?
>=20
> Regards
> Sergio Masci
>=20
>=20
> On Wed, 22 Jun 2011, Isaac Marino Bavaresco wrote:
>=20
>> You must explain in more details what you want and what you are doing,
>> so we can understand it better.
>>=20
>> What follows the definition of the symbol 'link'?
>> Where do you redefine the symbol again? And Where do you use the new
>> value? Can't you simply use a different symbol for each instance?
>>=20
>> Is this code fragment defined inside a macro? If so you could use the
>> 'local' directive to define a local symbol.
>>=20
>>=20
>> Best regards,
>>=20
>> Isaac
>>=20
>>=20
>>=20
>> Em 21/6/2011 17:17, Thomas Sefranek escreveu:
>>> I need the ability to redefine the label, it is the link in the diction=
ary.
>>>=20
>>> On Jun 21, 2011, at 3:57 PM, Isaac Marino Bavaresco wrote:
>>>=20
>>>> Em 21/6/2011 16:25, Thomas Sefranek escreveu:
>>>>>> This works in absolute mode!
>>>>> I see in the listing the address, but the assembler doesn't.
>>>>>=20
>>>>> 00078E 0000           00334         DW      link            ; Form th=
e dictionary link address for "skip".
>>>>> Error[151]  : Operand contains unresolvable labels or is too complex
>>>>> 00000000            00335 link    SET     $               ; Define th=
e dictionary link address for "skip" here.
>>>>>=20
>>>>> Tom
>>>>=20
>>>> I think you should not use 'SET', but rather define a normal label:
>>>>=20
>>>> link:
>>>>=20
>>>> 'SET' doesn't create a symbol in the OBJ's symbol table.
> --=20
> http://www.piclist.com PIC/SX FAQ & list archive
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--=20
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