IA186EM/IA188EM
Data Sheet
8-Bit/16-Bit Microcontrollers
February 25, 2011
7.1.8 Segment Register
The segment register is shown below.
SR Segment Register
00 ES
01 CS
10 SS
11 DS
7.2
Explanation of Notation Used in Instruction Set Summary Table
Notation used in the Instruction Set Summary Table is explained below.
Parameter Indication
:
The component of the left is the segment for a component
located in memory. The component on the right is the
offset.
::
The component of the left is concatenated with the
component on the right.
Operand Definition
imm8
imm16
m
Immediate byte: signed number between –128 and 127
Immediate word: signed number between –32768 and 32767
Operand in memory
m8
Byte string in memory pointed to by DS:SI or ES:DI
Word string in memory pointed to by DS:SI or ES:DI
General byte register or a byte in memory
General word register or a word in memory
m16
r/m8
r/m16
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