section 7 - Index of

EXAMPLE: MOVE X: -(R5),B1BEFORE EXECUTIONAFTER EXECUTIONB2 B1 BO55 48 47 24 23 01 3 BIB 6 2 0 0 41 A 5 5 4 C 017 0 23 o 23 oB255 48 4713 BI17 o 23B1BO24 23 02 3 4 5 61 A 5 5 4 C 01o 23 0X MEMORY23 oX MEMORY23 0$3007$3006 I-------i$3007 1-------1$3006 I---'------i15 oR5 '---'----'R515 015 0N51 xxxx I15 0M51 $FFFFI15 0N51 XXXX I15 0M51 $FFFF1Assembler Syntax: -RnMemory Spaces: P:, X:, V:, L:Additional Instruction Execution Time (Clocks): 2Additional Effective Address Words: 0Figure 4-10 Address Register Indirect -Predecrement4.4.2.1 Linear Modifier (Mn=$FFFF)When the value in the modifier register is $FFFF, address modification is performed usingnormal 16-bit linear arithmetic (see Table 4-2). A 16-bit offset, Nn, and + 1 or -1 can beused in the address calculations. The range of values can be considered as signed (Nnfrom -32,768 to + 32,767) or unsigned (Nn from 0 to + 65,535) since there is no arithmeticdifference between these two data representations. Addresses are normally consideredunsigned, and data is normally considered signed.