9.9.2.6 Addressing Modes
as understands the following addressing modes for the D30V. 
Rn in the following refers to any of the numbered
registers, but not the control registers.
     
Rn- Register direct
 @Rn- Register indirect
 @Rn+- Register indirect with post-increment
 @Rn-- Register indirect with post-decrement
 @-SP- Register indirect with pre-decrement
 @(disp, Rn)- Register indirect with displacement
 - addr
 - PC relative address (for branch or rep). 
 #imm- Immediate data (the # is optional and ignored)