CDP1805 Intersil Corporation, CDP1805 Datasheet - Page 25

• Manufacturer Part Number: CDP1805
• Description: CMOS 8-Bit Microprocessor with On-Chip RAM and Counter/Timer
• Manufacturer: Intersil Corporation

STATE
S1#1
S1#1
S1#1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
#2
#2
#2
TABLE 2. CONDITIONS ON DATA BUS AND MEMORY ADDRESS LINES DURING ALL MACHINE STATES (Continued)
A
B
C
C
C
C
C
C
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
8
9
I
0-3,
0-3,
0-3,
0-3,
0-F
0-F
0-F
0-F
8-B
8-B
8-B
8-B
N
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
E
F
5
6
MNEMONIC
BRANCH
BRANCH
BRANCH
BRANCH
SHRC
MARK
LONG
LONG
STXD
SHLC
INP 6
INP 7
LDXA
LONG
LONG
LONG
LONG
ADCI
SDBI
SMBI
SKIP
SKIP
ADC
SDB
SMB
REQ
SEQ
GLO
RET
SAV
PLO
GHI
DIS
PHI
CDP1805AC, CDP1806AC
BUS
BUS
MRX
1
MRX
0
MRX
D
MRX + D + DF
MRX - D - DFN
LSB(D)
D - MRX - DFN
T
X, P
R2 - 1
0
1
MRP + D + DF
MRP - D - DFN
MSB(D)
D - MRP - DFN
RN.0
RN.1
D
D
TAKEN: MRP
TAKEN: B
RP.0
NOT TAKEN RP + 1
NOT TAKEN RP + 1
TAKEN: RP + 1
TAKEN: RP + 1
MIE
MIE
Q
Q
MRX
MRX; RX - 1
RN.0
RN.1
T, MR2; P
MRX, D
MRX, D
X, P; RX + 1
X, P; RX + 1
D; RX + 1
D
D
OPERATION
R2
DF; DF
DF; DF
RP.1; MRP
25
B; RP + 1
DF, D
DF, D; RP + 1
DF, D; RP + 1
DF, D; RP + 1
DF, D
RP
RP
DF, D
RX
X
MSB(D)
RX
LSB D
RP
RP
RX
RX
RP
M(RP + 1)
M(RP + 1)
M(RP + 1)
DEVICE
DEVICE
HIGH Z
HIGH Z
HIGH Z
HIGH Z
FROM
FROM
DATA
DATA
DATA
MRX
MRX
MRX
MRX
MRX
MRX
MRP
MRP
MRP
RN.0
RN.1
MRP
MRP
MRP
BUS
I/O
I/O
D
T
T
D
D
ADDRESS
MEMORY
RP + 1
RP + 1
RP + 1
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RP
RP
RP
RP
RP
RP
RN
RN
RN
RN
RP
RP
RP
R2
MRD
1
1
0
0
0
1
0
0
1
0
1
1
1
1
0
0
1
0
1
1
1
1
0
0
0
0
0
0
MWR
0
0
1
1
1
0
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
LINES
N
6
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0