User guide

alid

Addressing Modes and File

ypes for Instruction Parameters

C–3

Available Addressing Modes

The following addressing modes are available:

• immediate

• direct

• indirect

Immediate Addressing

Indicates

that a constant is a valid file type.

Direct Addressing

The

data stored in the specified address is used in the instruction. For example:

N7:0 T4:8.ACC

ST20:5

Indexed Direct Addressing

You may specify an address as being indexed by placing the “#” character in front of

the address. When an address of this form is encountered in the program, the

processor takes the element number of the address and adds to it the value contained

in the Index Register S:24, then uses the result as the actual address. For example:

#N7:10 where S:24 = 15

The actual address used by the instruction is N7:25.

Reference