NEC 78K0 User Manual page 401

Instruction
Mnemonic
Group
16-bit ADDW AX, #word
operation
SUBW AX, #word
CMPW AX, #word
Multiply/ MULU X
divide
DIVUW C
Increment/ INC r
decrement
saddr
DEC r
saddr
INCW rp
DECW rp
Rotate ROR A, 1
ROL A, 1
RORC A, 1
ROLC A, 1
ROR4 [HL]
ROL4 [HL]
BCD ADJBA
adjustment
ADJBS
Bit MOV1 CY, saddr.bit
manipulate
CY, sfr.bit
CY, A.bit
CY, PSW.bit
CY, [HL].bit
saddr.bit, CY
sfr.bit, CY
A.bit, CY
PSW.bit, CY
[HL].bit, CY
Notes 1. When the internal high-speed RAM area is accessed or for an instruction with no data access
2. When an area except the internal high-speed RAM area is accessed
Remarks 1. One instruction clock cycle is one cycle of the CPU clock (f
control register (PCC).
2. This clock cycle applies to the internal ROM program.
3. n is the number of waits when the external memory expansion area is read.
4. m is the number of waits when the external memory expansion area is written.
CHAPTER 24 INSTRUCTION SET
Clocks
Operands Bytes
Note 1
3 6
3 6
3 6
2 16
2 25
1 2
2 4
1 2
2 4
1 4
1 4
1 2
1 2
1 2
1 2
2 10 12 + n + m A
2 10 12 + n + m A
2 4
2 4
3 6
−
3
2 4
−
3
2 6
3 6
−
3
2 4
−
3
2 6
User's Manual U16227EJ2V0UD
Operation
Note 2
− AX, CY ← AX + word
− AX, CY ← AX − word
− AX − word
− AX ← A × X
− AX (Quotient), C (Remainder) ← AX ÷ C
− r ← r + 1
(saddr) ← (saddr) + 1
6
− r ← r − 1
(saddr) ← (saddr) − 1
6
− rp ← rp + 1
rp ← rp − 1
−
− ← A
(CY, A , A
m − 1
7 0
− ← A
(CY, A , A
0 7 m + 1
− (CY ← A ← CY, A
, A
0 7
− (CY ← A ← CY, A
, A
7 0
← (HL)
, (HL)
3 − 0 3 − 0
← (HL)
(HL)
3 − 0 7 − 4
← (HL)
, (HL)
3 − 0 7 − 4
← (HL)
(HL)
7 − 4 3 − 0
−
Decimal Adjust Accumulator after Addition
−
Decimal Adjust Accumulator after Subtract
CY ← (saddr.bit)
7
CY ← sfr.bit
7
− CY ← A.bit
CY ← PSW.bit
7
CY ← (HL).bit
7 + n
(saddr.bit) ← CY
8
sfr.bit ← CY
8
A.bit ← CY
−
PSW.bit ← CY
8
8 + n + m (HL).bit ← CY
) selected by the processor clock
CPU
Flag
Z AC CY
× ×
× ×
× ×
× ×
× ×
× ×
× ×
← A ) × 1 time
m
← A ) × 1 time
m
← A ) × 1 time
m − 1
m
← A ) × 1 time
m + 1 m
← A
,
7 − 4 3 − 0
← A
,
3 − 0 3 − 0
× ×
× ×
× ×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
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