18.104.22.168 Special Characters
A semicolon (‘;’) can be used anywhere on a line to start a
comment that extends to the end of the line.
If a ‘#’ appears as the first character of a line, the whole line
is treated as a comment, but in this case the line could also be a
logical line number directive (see Comments) or a preprocessor
control command (see Preprocessing).
Sub-instructions may be executed in order, in reverse-order, or in parallel.
Instructions listed in the standard one-per-line format will be executed sequentially.
To specify the executing order, use the following symbols:
The D10V syntax allows either one instruction per line, one instruction per line with
the execution symbol, or two instructions per line. For example
- Sequential with instruction on the left first.
- Sequential with instruction on the right first.
Since ‘$’ has no special meaning, you may use it in symbol names.
abs a1 -> abs r0
- Execute these sequentially. The instruction on the right is in the right
container and is executed second.
abs r0 <- abs a1
- Execute these reverse-sequentially. The instruction on the right is in the right
container, and is executed first.
ld2w r2,@r8+ || mac a0,r0,r7
- Execute these in parallel.
ld2w r2,@r8+ ||
- Two-line format. Execute these in parallel.
- Two-line format. Execute these sequentially. Assembler will
put them in the proper containers.
ld2w r2,@r8+ ->
- Two-line format. Execute these sequentially. Same as above but
second instruction will always go into right container.