Sharp MZ-80B Owner's Manual page 109

100
Mnemonic
CALL nn
CALL cc,nn
RET
RET cc
RETI
RETN
RST p
!'io.
No. No.
Symbolic
Flags
OP-Code
of of
M ofT Co mments
Operation
c z
P/ V
s
N H 76 543 210
Bytes Cycles
States
(SP - l) ~PCB
• •
• • • •
11 001 101 3
5 17
(SP - 2) ~PCt
~
n
-
PC<--nn
~
n
-
If condition cc is false
• • • • • •
11 cc 100 3
3
10 If
cc is false
continue, otherwise
~
n
-
same as CA LL nn
~
n
-
3 5 17
If cc is true
PCL <--(SP)
• • • • •
•
11 001 001 1 3
10
PCH<--(SP + l)
If condition cc is false
• • • • • •
11 cc 000 1 1 5
If cc is false
cont inu e, otherwise
1 3 11
If cc is
true
same as
RET cc
Return from
• • • • • •
11 101 101 2 4 14 000
interrupt
01 001 101 001
Return from non
• • • • • •
11 101 101 2 4 14
010
maskable int errupt 01 000 101
011
100
101
110
111
(SP - l) ~PCu
• •
•
• • •
11
t
111 1 3 11
t
(SP-2) ~PCL
000
PCu<--0
001
PCL~P
010
011
100
101
110
111
Flag Notation: • = flag not affected, 0 = flag reset, 1 = flag set, X= flag is unknown
~
= flag is affected according to the result of the operation.
CALL AND RETURN GROUP
TABLE 4.3-10
Condition
NZ non zero
Z zero
NC
non car ry
C ca rry
PO parity odd
PE
parity e.-en
P sign po sitive
M sign negative
p
OOH
08H
10H
18 H
20H
28H
30H
38H