as understands the following addressing modes for the D10V. Rn in the following refers to any of the numbered registers, but not the control registers.
RnRegister direct
@RnRegister indirect
@Rn+Register indirect with post-increment
@Rn-Register indirect with post-decrement
@-SPRegister indirect with pre-decrement
@(disp, Rn)Register indirect with displacement
addrPC relative address (for branch or rep).
#immImmediate data (the # is optional and ignored)