Hitachi AP1 Data Book page 174

4-bit single-chip microcomputer
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L C D - I I I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(NOTE) 1. (XY) after a mnemonic code has four meanings as follows.
Mnemonic only
Instruction execution only
Mnemonic with X
Instruction execution, X -
SPX
Mnemonic with Y
Instruction execution, Y -
Spy
Mnemonic with XY
Instruction execution, X _
SPX, Y -
SPY
[Example) LAM
M -+ A
LAMX
M -+ A, X -SPX
LAMY
M -+ A, Y _SPY
LAMXY
M -+ A, X _SPX, Y -Spy
2. Status column shows the factor which affects status by the instruction of status change.
NZ •......... ALU
Not Zeto
C
.......... ALU
Overflow in Addition/Carry
NB .......... ALU
Overflow in Subtraction/No Borrow
except above .... Content of status column affects status directly.
3. Carry flip-flop is not always affected by executing the instruction which affects the Status.
Instructions which affect Cerry flip-flop are eight as follows.
AMC
SEC
SMC
REC
DAA
ROTL
DAS
ROTR
4. All instructions except for P are executed in single cycle.
P is executed in 2-cycle.
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