HYUNDAI Micro Electronics
B. INSTRUCTION
GMS800 Series
B.1 Terminology List
Terminology
Description
A
X
Accumulator
X - register
Y
Y - register
PSW
#imm
dp
Program Status Word
8-bit Immediate data
Direct Page Offset Address
Absolute Address
!abs
[ ]
Indirect expression
Register Indirect expression
{ }
{ }+
.bit
Register Indirect expression, after that, Register auto-increment
Bit Position
A.bit
dp.bit
M.bit
rel
Bit Position of Accumulator
Bit Position of Direct Page Memory
Bit Position of Memory Data (000H~0FFFH)
Relative Addressing Data
U-page (0FF00H~0FFFFH) Offset Address
Table CALL Number (0~15)
upage
n
+
Addition
Upper Nibble Expression in Opcode
0
x
y
Bit Position
Bit Position
Upper Nibble Expression in Opcode
1
−
×
Subtraction
Multiplication
/
Division
( )
Contents Expression
AND
OR
Exclusive OR
~
←
→
↔
=
NOT
Assignment / Transfer / Shift Left
Shift Right
Exchange
Equal
≠
Not Equal
MAR. 2000
iii
HYNIX [ HYNIX SEMICONDUCTOR ]
