Tag directive – Zilog Z8F0130 User Manual
Page 338
Using the Macro Assembler
UM013037-1212
314
Zilog Developer Studio II – Z8 Encore!
User Manual
An example structure definition is as follows:
DATE
.STRUCT
MONTH
DS
1
DAY
DS
1
YEAR
DS
2
DSIZE
.ENDSTRUCT
DATE
Directives allowed between
.STRUCT
and
.ENDSTRUCT
are directives that specify size,
principally
DS
,
ALIGN
,
ORG
, and
.TAG
and their aliases. Also,
BLKB
,
BLKW
, and
BLKL
direc-
tives with one parameter are allowed because they indicate only size.
The following directives are not allowed within
.STRUCT
and
.ENDSTRUCT
:
•
Initialization directives (
DB
,
DW
,
DL
,
DF
, and
DD
) and their aliases
•
BLKB
,
BLKW
, and
BLKL
with two parameters because they perform initialization
•
Equates (
EQU
and
SET
)
•
Macro definitions (
MACRO
)
•
Segment directives (
SEGMENT
and
FRAME
)
•
Nested
.STRUCT
and
.UNION
directives
•
CPU instructions (for example,
LD
and
NOP
)
.TAG Directive
The
.TAG
assembler declares or assigns a label to have a structure type. This directive can
also be used to define a structure/union element within a structure. The
.TAG
directive
does not allocate memory.
The
.TAG
directive to define a structure/union element has the following form:
[stag]
.STRUCT
[offset | : parent]
[name_1]
DS
count1
[name_2]
DS
count2
...
[tname]
.TAG
stagx [count]
...
[ssize]
.ENDSTRUCT
[stag]
Note:
- Z8F0131 Z8F0230 Z8F0231 Z8F0430 Z8F0431 Z8F043A Z8F0830 Z8F0831 Z8F083A Z8F1232 Z8F1233 Z8F0113 Z8F011A Z8F0123 Z8F012A Z8F0213 Z8F021A Z8F0223 Z8F022A Z8F0411 Z8F0412 Z8F0413 Z8F041A Z8F0421 Z8F0422 Z8F0423 Z8F042A Z8F0811 Z8F0812 Z8F0813 Z8F081A Z8F0821 Z8F0822 Z8F0823 Z8F082A Z8F0880 Z8F1621 Z8F1622 Z8F1680 Z8F1681 Z8F1682 Z8F2421 Z8F2422 Z8F2480 Z8F3221 Z8F3222 Z8F3281 Z8F3282 Z8F4821 Z8F4822 Z8F4823 Z8F6081 Z8F6082 Z8F6421 Z8F6422 Z8F6423 Z8F6481 Z8F6482 Z8FS021A ZMOT1AHH Z8FS040B ZMOT0BHH ZMOT0BSB Z8FMC04 Z8FMC08 Z8FMC16