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GMS81C2112 Datasheet(PDF) 37 Page - Hynix Semiconductor

No. de Pieza. GMS81C2112
Descripción  HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
Descarga  107 Pages
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Fabricante  HYNIX [Hynix Semiconductor]
Página de inicio  http://www.skhynix.com/ko/index.jsp
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GMS81C2112 Datasheet(HTML) 37 Page - Hynix Semiconductor

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GMS81C2112/GMS81C2120
JUNE. 2001 Ver 1.00
31
983501
INC
!0135H
;A
←ROM[135H]
(5) Indexed Addressing
X indexed direct page (no offset)
→ {X}
In this mode, a address is specified by the X register.
ADC, AND, CMP, EOR, LDA, OR, SBC, STA, XMA
Example; X=15H, G=1
D4
LDA
{X}
;ACC
←RAM[X].
X indexed direct page, auto increment
→ {X}+
In this mode, a address is specified within direct page by
the X register and the content of X is increased by 1.
LDA, STA
Example; G=0, X=35H
DB
LDA
{X}+
X indexed direct page (8 bit offset)
→ dp+X
This address value is the second byte (Operand) of com-
mand plus the data of
-register. And it assigns the mem-
ory in Direct page.
ADC, AND, CMP, EOR, LDA, LDY, OR, SBC, STA
STY, XMA, ASL, DEC, INC, LSR, ROL, ROR
Example; G=0, X=0F5H
C645
LDA
45H+X
Y indexed direct page (8 bit offset)
→ dp+Y
This address value is the second byte (Operand) of com-
mand plus the data of Y-register, which assigns Memory in
Direct page.
This is same with above (2). Use Y register instead of X.
Y indexed absolute
→ !abs+Y
Sets the value of 16-bit absolute address plus Y-register
data as Memory.This addressing mode can specify memo-
ry in whole area.
Example; Y=55H
98
0F100H
~
~
~
~
data
135H
–
01
0F102H
35
0F101H
—
data+1
data
˜
address: 0135
data
D4
115H
0E550H
data
A
—
–
~
~
~
~
data
DB
35H
data Æ A
—
–
~
~
~
~
36H Æ X
data
45
3AH
0E551H
data
A
—
–
~
~
~
~
C6
0E550H
45H+0F5H=13AH
˜


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