GMS30004 Datasheet, PDF (33/158 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 3. Instruction
Detailed Description
(1) LAY
Naming :
Status :
Format :
Function :
<Comment>
Load Accumulator from Y-Register
Set
I
AàY
Data of four bits in the Y-register is unconditionally transferred
to the accumulator. Data in the Y-register is left unchanged.
(2) LYA
Naming :
Status :
Format :
Function :
<Comment>
Load Y-register from Accumulator
Set
I
YàA
Load Y-register from Accumulator
(3) LAZ
Naming :
Status :
Format :
Function :
<Comment>
Clear Accumulator
Set
I
Aà0
Data in the accumulator is unconditionally reset to zero.
(4) LMA
Naming :
Status :
Format :
Function :
<Comment>
Load Memory from Accumulator
Set
I
M(X,Y) à A
Data of four bits from the accumulator is stored in the RAM
location addressed by the X-register and Y-register. Such data
is left unchanged.
(5) LMAIY
Naming :
Status :
Format :
Function :
<Comment>
Load Memory from Accumulator and Increment Y-Register
Set
I
M(X,Y) à A, Y à Y+1
Data of four bits from the accumulator is stored in the RAM
location addressed by the X-register and Y-register. Such data
is left unchanged.
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