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ZiLOG Z8 Technical Manual

ZiLOG Z8
166 pages
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PUSH
Push
PUSH
src
Instruction
For.at:
OPC
Address
Mode
Cycles
(Hex)
IIrc
~
______
o_P_c
______
~1
I~
_______
s_rc
______
~
10
Internal
stack
70
R
12
External
stack
Operation:
Flags:
EX8lllple:
Note:
SP
<--
SP
- 1
asp
<--
src
12
14
Internsl
Externsl
stack
71
IR
stack
The
contents
of
the
SP
are
decremented,
then
the
contents
of
the
source
are
loaded
into
the
location
addressed
by
the
decremented
SP,
thus
adding a
new
element
to
the
top
of
the
stack.
No
flags
affected
If
the
SP
contains
~1n01,
the
statement
PUSH
FLAGS
stores
the
contents
of
the
register
named
FLAGS
in
location
~1000.
After
the
PUSH
operation,
the
SP
contains
%1000.
When
used
to
specify
a
4-bit
working-register
address,
address
modes
R
or
IR
use
the
format:
E
src
5-35

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ZiLOG Z8 Specifications

General IconGeneral
BrandZiLOG
ModelZ8
CategoryDesktop
LanguageEnglish

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