section 7 - Index of

EXAMPLE: MOVE VO,V: (R3)-BEFORE EXECUTIONAFTER EXECUTIONY1YO47 24 23 01 1 2 3 1 2 31 4 5 6 4 5 6\23 o 23 047\123Y12 31YO24 23 02 3\ 4 5 6 4 5 6\o 23 0YMEMORY23 oYMEMORY23 0$4735i--------i$4734 1---------1$4735 1---------1$4734 f---------iR315 oL-~_----'R315 015 0N31 XXXX I15 0N3\ XXXX I15 0M31 $FFFFI15 0M31 $FFFFIAssembler Syntax: (Rn)-Memory Spaces: P:, X:, V:, XV:, L:Additional Instruction Execution Time (Clocks): 0Additional Effective Address Words: 0Figure 4-6 Address Register Indirect -Postdecrement4.4.1.6 Indexed By Offset NnThe address of the operand is the sum of the contents of the address register, Rn, andthe contents of the address offset register, Nn (see Table 4-1 and Figure 4-9). The contentsof the Rn and Nn registers are unchanged. This addressing mode, which requiresan extra instruction cycle, cannot be used for making XV: memory references.