CDP1805 Intersil Corporation, CDP1805 Datasheet - Page 27

• 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#1
S1#1
S1#1
S1#1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
S1
#2
#3
#2
#3
#2
#2
#3
#4
#2
#2
TABLE 2. CONDITIONS ON DATA BUS AND MEMORY ADDRESS LINES DURING ALL MACHINE STATES (Continued)
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
3
3
6
6
6
7
7
7
7
7
7
7
7
7
7
7
I
0-F
0-F
0-F
0-F
0-F
0-F
N
A
B
C
D
E
C
C
F
2
3
4
5
6
9
F
4
4
6
6
6
6
7
7
7
8
MNEMONIC
SCM2
SCM1
DADC
DADC
DSMB
DSMB
SPM2
SPM1
DBNZ
DBNZ
DBNZ
DSAV
DSAV
DSAV
DSAV
RLXA
RLXA
RLXA
DACI
DACI
DSBI
STM
GEC
ETQ
LDC
BCI
BXI
CID
XIE
XID
CIE
CDP1805AC, CDP1806AC
CNTR - 1 ON EF2 AND TPA
CNTR - 1 ON EF2 0 TO 1
CNTR - 1 ON EF1 AND TPA
CNTR - 1 ON EF1 0 TO 1
CNTR STOPPED: D
CNTR; 0
CNTR RUNNING: D
CNTR - 1 ON TPA
CNTR
IF CNTR THRU 0: Q
1
0
1
0
RN - 1
MRP
TAKEN: B
RP.0
NOT TAKEN: RP + 1
TAKEN: MRP
0
NOT TAKEN: RP + 1
TAKEN: MRP
NOT TAKEN: RP + 1
MRX
B
B, T
MRX + D + DF
DECIMAL ADJUST
RX - 1
T
D
SHIFT D RIGHT WITH CARRY
D
D - MRX - (NOT DF)
DECIMAL ADJUST
MRP + D + DF
RP + 1
DECIMAL ADJUST
D - MRP - (NOT DF)
RP + 1
XIE
XIE
CIE
CIE
CI
MRX; RX - 1
T; MRX
MRX; RX - 1
MRX
RN.0, RN.1
B; RP + 1
B, RX + 1
OPERATION
D
RN
RX
RP
RP
CI
RP.1, MRP
B; RX + 1
27
RP.0;
RP.0
DF, D
DF, D;
RX
32
RX
RP
RX
DF, D
DF, D
DF, D
CH
CH,
Q
DF, D;
RP
RP
RP
DF, D
RX
M(RP + 1)
M(RX + 1)
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
DATA
CNTR
MRP
MRP
MRP
MRX
MRX
MRX
MRP
MRP
BUS
D
D
D
T
ADDRESS
MEMORY
RP + 1
RX + 1
RP + 1
RX - 1
RX - 2
RX - 3
RN
R2
R3
R4
R5
R6
R7
R8
R9
RA
RB
RC
RD
RP
RP
RP
RX
RN
RX
RD
RP
RX
RP
RP
RP
MRD
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
0
1
1
1
1
1
0
1
0
1
0
1
0
MWR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
1
LINES
N
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0