MC81F4204 Datasheet, PDF (59/150 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

Example :
:
LDA !0FA00H+Y
:
;when Y = 55h
;op code is D5h
MC81F4204
Indirect Addressing
Direct page indirect → [dp]
Assigns data address to use for accomplishing command which sets memory data (or pair memory) by
Operand.
Also index can be used with Index register X,Y.
JMP, CALL
Example :
:
JMP [35h]
:
;when G = 0
;op code is 3Fh
X indexed indirect → [dp+X]
Processes memory data as Data, assigned by 16-bit pair memory which i s determined by pair data
[dp+X+1][dp+X] Operand plus X-register data in Direct page.
ADC, AND, CMP, EOR, LDA, OR, SBC, STA
October 19, 2009 Ver.1.35
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