RCA 1800 Operator's Manual page 97

96 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Operator Manual for the RCA CDS II CDP18S005
Arithmetic Operationst+
OP
INSTRUCTION
MNEMONIC CODE OPERATION
ADD ADD
F4
M(R(X)) +D~DF, 0
ADD IMMEDIATE ADI
FC
M(R(P) +O~OF, 0; R(P) +1
ADD WITH CARRY ADC 74 M(R(X)) +0
+OF~DF,
0
ADD WITH CARRY ADCI 7C M(R(P) +0 +OF~DF, 0
IMMEDIATE
R(P) +1
SUBTRACT 0
SO F5 M(R(X))-O~DF, 0
SUBTRACT 0 IMMEDIATE SOl FD M(R(P))-D~DF, 0; R(P) +1
.-
SUBTRACT 0 WITH SOB 75
M(R(X))-D-(NOT
DF)~DF;
0
BORROW
SUBTRACT 0 WITH SDBI 70
M(R(P))-D-(NOT OF)-->OF, D;
.:\
.
BORROW, IMMEDIATE
R(P) +1
SUBTRACT MEMORY SM F7
D-M(R(X))~DF, 0
SUBTRACT MEMORY SMI FF
O-M(R(P))~OF,
0;
IMMEDIATE
R(P) +1
SUBTRACT MEMORY WITH 5MB 77
O-M(R(X))-(NOT DF)-->DF, 0
BORROW
SUBTRACT MEMORY WITH
5MBI 7F O-M(R(P))-(NOT
DF)~DF,
0
BORROW, IMMEDIATE
R(P) +1
Branch Instructions - Short Branch
OP
INSTRUCTION MNEMONIC CODE OPERATION
SHORT BRANCH BR 30
M(R (P)) ..... R (P).O
NO SHORT BRANCH
NBR 38·
R(P) +1
(SEE SKP)
SHORT BRANCH IF 0=0 BZ 32 IF 0=0, M(R(P))-·R(P).O
ELSE R(P) +1
SHORT BRANCH IF
BNZ 3A IF 0 NOT 0, M(R(P)) ··R(P).O
o NOTa
ELSE R(P) +1
SHORT BRANCH IF OF = 1
aDF l
SHORT BRANCH IF POS BPZ
33· IF DF=l, M(R(P)) ..... R(P) .O
OR ZERO
ELSE R(P) +1
SHORT BRANCH IF EOUAL BGE
OR GREATER
SHORT BRANCH IF DF =O
BNF
1
3B·
IF OF =O, M(R(P)) .... R(P) .O
SHORT BRANCH IF MINUS
BM ELSE R(P) +1
SHORT BRANCH IF LESS BL
SHORT BRANCH IF 0=1 BO 31
IF 0=1, M(R(P))-·R(P).O
ELSE R(P)
+1
SHORT B RANCH IF 0=0
BNO 39
IF 0=0, M(R(P))-·R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF1 1
B1 34
IF EF11, M(R(P)) -R(P),O
ELSE RIP) 11
SHORT BRANCH IF EF 1 0 BN1 3C
IF EF1 0, M(R(P)) -H(P),O
ELSE R(P) 11
SHORT BRANCH IF EF2 -· 1 B2 35
IF EF2 ~' 1, M(R(P)) -R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF2=O BN2 3D
IF EF2=O, M(R(P)) ·R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF3=1 B3 36
IF EF3=1, M(R(P)) ·R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF3=O BN3 3E
IF EF3=0. M(R(P))-.R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF4=1
B4 37 IF EF4=1. M(R(P)) .... R(P).O
ELSE R(P) +1
SHORT BRANCH IF EF4=O
BN4 3F IF EF4=O. M(R(P))-R(P) .O
ELSE R(P) +1