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ZiLOG Z8 Technical Manual

ZiLOG Z8
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LDEI
dst,src
"'-
Instruction
for.at:
OPC
OPC
Operation:
flags:
Example:
LDEI
Load External Data Autoincrement
I
I
dst
I
I
src
dst
<--
src
r
<--
r + 1
rr
<--
rr
+
Cycles
src
1B
dst
1B
OPC
Address
Mode
(Hex)
dst
orc
B3
Ir
Irr
93
Irt
Ir
This
instruction
is
used
for
block
transfers
of
data
between
external
data
memory
and
the
register
file.
The
address
of
the
external
data-memory
location
is
specified
by
a
working-register
pair,
and
the
address
of
the
register
file
location
is
specified
by
a working
register.
The
contents
of
the
source
location
are
loaded
into
the
destination
location.
Both
addresses
are
then
incremented
automatically.
The
contents
of
the
source
are
not
affected.
No
flags
affected
If
the
working-register
pair
6-7
contains
%404A,
working
register
2
contains
%22
(34
decimal),
and
registers
34-35
contain
%ABC3,
the
statement
lDEI
ORR6,9R2
loads
the
value
%AB
into
external
location
%404A.
A second
lDEI
BRR6,BR2
loads
the
value
%C3
into
external
location
%404B.
5-31

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ZiLOG Z8 Specifications

General IconGeneral
BrandZiLOG
ModelZ8
CategoryDesktop
LanguageEnglish

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