Next: D10V-Regs, Previous: D10V-Subs, Up: D10V-Syntax

##### 8.6.2.3 Special Characters

``;`' and ``#`' are the line comment characters. 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:

``->`'
  Sequential with instruction on the left first.
``<-`'
  Sequential with instruction on the right first.
``||`'
  Parallel

The D10V syntax allows either one instruction per line, one instruction per line with the execution symbol, or two instructions per line. For example

`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+ ||`
`mac a0,r0,r7`
  Two-line format. Execute these in parallel.
`ld2w r2,@r8+`
`mac a0,r0,r7`
  Two-line format. Execute these sequentially. Assembler will put them in the proper containers.
`ld2w r2,@r8+ ->`
`mac a0,r0,r7`
  Two-line format. Execute these sequentially. Same as above but second instruction will always go into right container.

Since ``$`' has no special meaning, you may use it in symbol names.