UPD75216A Datasheet, PDF (39/72 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

Note 1 Mnemonic
Operands
RORC
NOT
INCS
DECS
SKE
SET1
CLR1
SKT
NOT1
A
A
reg
rp1
@HL
mem
reg
rp'
reg, #n4
@HL, #n4
A, @HL
XA, @HL
A, reg
XA.rp'
CY
CY
CY
CY
No. of Machine
Bytes Cycle
Operation
1
1
CY←A0, A3←CY, An–1←An
2
2
A←A
1
1 + S reg←reg+1
1
1 + S rp1←rp1+1
2
2 + S (HL)←(HL)+1
2
2 + S (mem)←(mem)+1
1
1 + S reg←reg–1
2
2 + S rp'←rp'–1
2
2 + S Skip if reg = n4
2
2 + S Skip if (HL) = n4
1
1 + S Skip if A = (HL)
2
2 + S Skip if XA = (HL)
2
2 + S Skip if A = reg
2
2 + S Skip if XA = rp'
1
1
CY←1
1
1
CY←0
1
1 + S Skip if CY = 1
1
1
CY←CY
Note 1. Instruction Group
2. Accumulator manipulation
µPD75216A
Addressing
Area
Skip
Condition
reg = 0
rp1 = 00H
*1
(HL) = 0
*3
(mem) = 0
reg = FH
rp = FFH
reg = n4
*1
(HL) = n4
*1
A = (HL)
*1
XA = (HL)
A = reg
XA = rp'
CY = 1
39