##### 9.8.2.5 Addressing Modes

`as` understands the following addressing modes for the D10V. `R` n in the following refers to any of the numbered registers, but not the control registers.

`R` n
  Register direct
`@R` n
  Register indirect
`@R` n`+`
  Register indirect with post-increment
`@R` n`-`
  Register indirect with post-decrement
`@-SP`
  Register indirect with pre-decrement
`@(`disp`, R` n`)`
  Register indirect with displacement
addr
  PC relative address (for branch or rep).
`#`imm
  Immediate data (the ‘`#`’ is optional and ignored)