GMS81C2020/GMS81C2120
Hyundai Micro Electronics
Y indexed indirect → [dp]+Y
Absolute indirect → [!abs]
Processes momory data as Data, assigned by the data
[dp+1][dp] of 16-bit pair memory paired by Operand in Di-
rect pageꢁplus Y-register data.
The program jumps to address specified by 16-bit absolute
address.
JMP
ADC, AND, CMP, EOR, LDA, OR, SBC, STA
Example; Y=10H
Example;
1F25E0 JMP
[!0C025H]
1725
ADC
[25H]+Y
PROGRAM MEMORY
0E025
H
25
25
26
05
H
E7
0E026
H
E0
H
jump to
address 0E30A
À
0E005 + Y(10) = 0E015
H
À
H
~
~
~
~
~
~
~
~
H
þ
0E725
NEXT
H
0E015
data
H
H
þ
~
~
~
~
~
~
~
~
0FA00
1F
H
0FA00
17
25
25
à A + data + C → A
E0
42
preliminary
Nov. 1999 Ver 0.0