HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 26

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

HMS87C5216
The operation within data memory (RAM)
ASL, BIT, DEC, INC, LSR, ROL, ROR
Example; Addressing accesses the address 0135
983500
(5) Indexed Addressing
X indexed direct page (no offset)
In this mode, a address is specified by the X register.
ADC, AND, CMP, EOR, LDA, OR, SBC, STA, XMA
Example; X=15
D4
0F100
0F101
0F102
0E550
0035
15
H
H
H
H
H
H
~ ~
~ ~
INC
LDA
H
data
data
D4
98
35
00
!0035H
{X}
~ ~
~ ~
address: 0035
þ
þ
À
À
data+1
;A
;ACC RAM[X].
Ã
data
RAM[035H]
{X}
data
A
H
.
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; X=35
DB
X indexed direct page (8 bit offset)
This address value is the second byte (Operand) of command plus
the data of X-register. And it assigns the memory in Direct page.
ADC, AND, CMP, EOR, LDA, LDY, OR, SBC, STA STY,
XMA, ASL, DEC, INC, LSR, ROL, ROR
Example; X=015
C645
0E550
0E551
5A
35
H
H
H
H
~ ~
~ ~
LDA
LDA
H
H
data
data
DB
C6
45
{X}+
45H+X
~ ~
~ ~
45H+15H=5AH
þ
SEP. 2004 Ver 1.01
þ
À
data
36H
À
Ã
data
A
X
dp+X
A