
3-24
SUBTRACT D WITH BORROW, IMMEDIATE
SDBl
7D
M(R(P)) - D - (Not DF)
→
DF, D; R(P) + 1
→
R(P)
SUBTRACT MEMORY
SM
F7
D-M(R(X))
→
DF, D
SUBTRACT MEMORY IMMEDIATE
SMl
FF
D-M(R(P))
→
DF, D; R(P) + 1
→
R(P)
SUBTRACT MEMORY WITH BORROW
SMB
77
D-M(R(X))-(NOT DF)
→
DF, D
SUBTRACT MEMORY WITH BORROW, IMMEDI-
ATE
SMBl
7F
D-M(R(P))-(NOT DF)
→
DF, D; R(P) + 1
→
R(P)
BRANCH INSTRUCTIONS - SHORT BRANCH
SHORT BRANCH
BR
30
M(R(P))
→
R(P).0
NO SHORT BRANCH (See SKP)
NBR
38
(Note 2)
R(P) + 1
→
R(P)
SHORT BRANCH IF D = 0
BZ
32
IF D = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF D NOT 0
BNZ
3A
IF D NOT 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF DF = 1
BDF
33
(Note 2)
IF DF = 1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF POS OR ZERO
BPZ
SHORT BRANCH IF EQUAL OR GREATER
BGE
SHORT BRANCH IF DF = 0
BNF
3B
(Note 2)
IF DF = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF MINUS
BM
SHORT BRANCH IF LESS
BL
SHORT BRANCH IF Q = 1
BQ
31
IF Q = 1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF Q = 0
BNQ
39
IF Q = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF1 = 1 (EF1 = V
SS
)
B1
34
IF EF1 =1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF1 = 0 (EF1 = V
CC
)
BN1
3C
IF EF1 = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF2 = 1 (EF2 = V
SS
)
B2
35
IF EF2 = 1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF2 = 0 (EF2 = V
CC
)
BN2
3D
IF EF2 = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF3 = 1 (EF3 = V
SS
)
B3
36
IF EF3 = 1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF3 = 0 (EF3 = V
CC
)
BN3
3E
IF EF3 = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF4 = 1 (EF4 = V
SS
)
B4
37
IF EF4 = 1, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
SHORT BRANCH IF EF4 = 0 (EF4 = V
CC
)
BN4
3F
IF EF4 = 0, M(R(P))
→
R(P).0, ELSE R(P) + 1
→
R(P)
BRANCH INSTRUCTIONS - LONG BRANCH
LONG BRANCH
LBR
C0
M(R(P))
→
R(P). 1, M(R(P) + 1)
→
R(P).0
NO LONG BRANCH (See LSKP)
NLBR
C8
(Note 2)
R(P) = 2
→
R(P)
LONG BRANCH IF D = 0
LBZ
C2
lF D = 0, M(R(P))
→
R(P).1, M(R(P) +1)
→
R(P).0,
ELSE R(P) + 2
→
R(P)
LONG BRANCH IF D NOT 0
LBNZ
CA
IF D Not 0, M(R(P))
→
R(P).1, M(R(P) + 1)
→
R(P).0, ELSE
R(P) + 2
→
R(P)
LONG BRANCH IF DF = 1
LBDF
C3
lF DF = 1, M(R(P))
→
R(P).1, M(R(P) + 1)
→
R(P).0, ELSE
R(P) + 2
→
R(P)
LONG BRANCH IF DF = 0
LBNF
CB
IF DF = 0, M(R(P))
→
R(P).1, M(R(P) + 1)
→
R(P).0, ELSE
R(P) + 2
→
R(P)
LONG BRANCH IF Q = 1
LBQ
C1
IF Q = 1, M(R(P))
→
R(P).1, M(R(P) + 1)
→
R(P).0,
ELSE R(P) + 2
→
R(P)
TABLE 1. INSTRUCTION SUMMARY
(SEE NOTES)
(Continued)
INSTRUCTION
MNEMONIC
OP
CODE
OPERATION
CDP1802A, CDP1802AC, CDP1802BC