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Part Name
Description
UPD75212ACW View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
Manufacturer
UPD75212ACW
4-BIT SINGLE-CHIP MICROCOMPUTER
NEC => Renesas Technology
UPD75212ACW Datasheet PDF : 70 Pages
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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
←
A
0
, A
3
←
CY, A
n–1
←
A
n
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
µ
PD75212A
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
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