NEC PD750004, User Manual, Page: 48 / 342

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µPD750008 USER'S MANUAL
Example 2. The data memory of 00H to FFH is cleared to 0.
CLR1 RBE
CLR1 MBE
MOV XA,#00H
MOV HL,#04H
LOOP: MOV @HL,A ; (HL) <– A
INCS HL ; HL <– HL + 1
BR LOOP
Figure 3-3. Updating Static RAM Addresses
INCS D
DECS D
INCS L DECS L
INCS D
DECS D
INCS E DECS E
INCS H
DECS H
INCS L DECS L
INCS H
DECS H
x 0H
0 x H
F x H
@DL
4-bit transfer
@DE
4-bit transfer
@HL
4-bit
manipulation
8-bit
manipulation
@H + mem.bit
Bit manipulation
Direct
addressing
Bit manipulation
4-bit transfer
8-bit transfer
x FH
DECS DE INCS DE
DECS HL INCS HL
Automatic
decrement Automatic
increment