NEC switch - Page 206

CHAPTER 15 INSTRUCTION SET
User’s Manual U12978EJ3V0UD
206
Mnemonic Operands Bytes Clocks Operation Flag
ZACCY
CALL !addr16 3 6 (SP−1) ← (PC+3)
H
, (SP−2) ← (PC+3)
L
,
PC ← addr16, SP ← SP−2
CALLT [addr5] 1 8 (SP−1) ← (PC+1)
H
, (SP−2) ← (PC+1)
L
,
PC
H
← (00000000, addr5+1),
PC
L
← (00000000, addr5), SP ← SP−2
RET 1 6 PC
H
← (SP+1), PC
L
← (SP), SP ← SP+2
RETI 1 8 PC
H
← (SP+1), PC
L
← (SP),
PSW ← (SP+2), SP ← SP+3, NMIS ← 0
RRR
PUSH PSW 1 2 (SP−1) ← PSW, SP ← SP−1
rp 1 4 (SP−1) ← rp
H
, (SP−2) ← rp
L
, SP ← SP−2
POP PSW 1 4 PSW ← (SP), SP ← SP+1 R R R
rp 1 6 rp
H
← (SP+1), rp
L
← (SP), SP ← SP+2
MOVW SP, AX 2 8 SP ← AX
AX, SP 2 6 AX ← SP
BR !addr16 3 6 PC ← addr16
$addr16 2 6 PC ← PC+2+jdisp8
AX 1 6 PC
H
← A, PC
L
← X
BC $saddr16 2 6 PC ← PC+2+jdisp8 if CY=1
BNC $saddr16 2 6 PC ← PC+2+jdisp8 if CY=0
BZ $saddr16 2 6 PC ← PC+2+jdisp8 if Z=1
BNZ $saddr16 2 6 PC ← PC+2+jdisp8 if Z=0
BT saddr.bit,$addr16 4 10 PC ← PC+4+jdisp8 if (saddr.bit)=1
sfr.bit,$addr16 4 10 PC ← PC+4+jdisp8 if sfr.bit=1
A.bit,$addr16 3 8 PC ← PC+3+jdisp8 if A.bit=1
PSW.bit,$addr16 4 10 PC ← PC+4+jdisp8 if PSW.bit=1
BF saddr.bit,$addr16 4 10 PC ← PC+4+jdisp8 if (saddr.bit)=0
sfr.bit,$addr16 4 10 PC ← PC+4+jdisp8 if sfr.bit=0
A.bit,$addr16 3 8 PC ← PC+3+jdisp8 if A.bit=0
PSW.bit,$addr16 4 10 PC ← PC+4+jdisp8 if PSW.bit=0
DBNZ B,$addr16 2 6 B ← B−1, then PC ← PC+2+jdisp8 if B≠0
C,$addr16 2 6 C ← C−1, then PC ← PC+2+jdisp8 if C≠0
saddr,$addr16 3 8 (saddr) ← (saddr)−1, then
PC ← PC+3+jdisp8 if (saddr)≠0
NOP 1 2 No Operation
EI 3 6 IE ← 1 (Enable interrupt)
DI 3 6 IE ← 0 (Disable interrupt)
HALT 1 2 Set HALT mode
STOP 1 2 Set STOP mode
Remark One instruction clock cycle is one CPU clock cycle (fCPU
) selected by the processor clock control
register (PCC).