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Chapter 15. D10V Dependent Features

f1

Flag 1

c

Carry flag

15.2.5. Addressing Modes

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.

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)

15.2.6. @WORD Modifier

Any symbol followed by

@word

will be replaced by the symbol's value shifted right by 2. This is used

in situations such as loading a register with the address of a function (or any other code fragment).

For example, if you want to load a register with the location of the function

main

then jump to that

function, you could do it as follows:

ldi

r2, main@word

jmp

r2