Conditional assembly, Repeat sequence of operations, While sequence of operations – Zilog Z8F0130 User Manual
Page 349
UM013037-1212
Conditional Assembly
Zilog Developer Studio II – Z8 Encore!
User Manual
325
.$REPEAT Sequence of Operations
The following sequence of operations is performed in processing the
.$REPEAT
struc-
tured assembly test directives:
1. The assembler generates object code to evaluate the conditions specified on the
.$UNTIL
directive and on any optional
.$BREAK
and
.$CONTINUE
directives.
2. At execution-time, the object code generated from statements in the structured assem-
bly block are executed until the specified condition is true.
3. At execution time, object code generated from
.$BREAK
directives is executed at the
point in which it appears in the block. If no condition is specified on the
.$BREAK
condition, or if the condition is true, the
.$REPEAT
loop is exited.
4. At execution time, object code generated from
.$CONTINUE
directives is executed at
the point in which it appears in the block. If no condition is specified on the
.$CON-
TINUE
condition, or if the condition is true, execution of code generated from state-
ments in the block resumes at the beginning of the block.
.$WHILE Sequence of Operations
The following sequence of operations is performed in processing the
.$WHILE
structured
assembly test directives:
1. The assembler generates object code to evaluate the conditions specified on the
.$WHILE
directive and on any optional
.$BREAK
and
.$CONTINUE
directives.
2. At execution time, the object code generated from statements in the structured assem-
bly block are executed while the specified condition is true.
3. At execution time, object code generated from
.$BREAK
directives is executed at the
point in which it appears in the block. If no condition is specified on the
.$BREAK
condition or if the condition is true, the
.$WHILE
loop is exited.
4. At execution time, object code generated from
.$CONTINUE
directives is executed at
the point in which it appears in the block. If no condition is specified on the
.$CON-
TINUE
condition or if the condition is true, execution of code generated from state-
ments in the block resumes at the beginning of the block.
Conditional Assembly
Conditional assembly is used to control the assembly of blocks of code. Entire blocks of
code can be enabled or disabled using conditional assembly directives.
The following conditional assembly directives are allowed:
•
•
- 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