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APPENDIX
B.6 Effective address field
Table B.6-1 shows the effective address field.
■ Effective Address Field
Table B.6-1 Effective Address Field
Code Representation Address format
Byte count of
extended address
part
*
00 R0 RW0 RL0
Register direct: Individual parts
correspond to the byte, word, and long
word types in order from the left.
-
01 R1 RW1 (RL0)
02 R2 RW2 RL1
03 R3 RW3 (RL1)
04 R4 RW4 RL2
05 R5 RW5 (RL2)
06 R6 RW6 RL3
07 R7 RW7 (RL3)
08 @RW0
Register indirect 0
09 @RW1
0A @RW2
0B @RW3
0C @RW0+
Register indirect with post increment 0
0D @RW1+
0E @RW2+
0F @RW3+
10 @RW0+disp8
Register indirect with 8-bit displacement 1
11 @RW1+disp8
12 @RW2+disp8
13 @RW3+disp8
14 @RW4+disp8
15 @RW5+disp8
16 @RW6+disp8
17 @RW7+disp8
18 @RW0+disp16
Register indirect with 16-bit
displacement
2
19 @RW1+disp16
1A @RW2+disp16
1B @RW3+disp16
1C @RW0+RW7 Register indirect with index 0
1D @RW1+RW7 Register indirect with index 0
1E @PC+disp16 PC indirect with 16-bit displacement 2
1F addr16 Direct address 2
*: Each byte count of the extended address part applies to + in the # (byte count) column in "B.8 F
2
MC-
16LX Instruction List". For the meaning of "#", see "B.7 How to Read the Instruction List".