8279/8279·5
o 1
14
15_Display
lst
entry
r;TT_-
_-
_-
_-ITI
RAM
L..:.LJ. Address
o 1
14 15
2nd entry
[20
= - - =
IIJ
o 1
14 15
16th entry
G21
= = =
=:EEl
o 1
14
15
17th entry
E0=
= =
=~
o 1
14
15
18th entry
@EI=
= =
=:EE1
Right Entry
LEFT ENTRY MODE
(AUTO INCREMENT)
Right
entry
is
the
method
used by most
e!ectronic
ca)culators. The first entry is placed in the right most
display character. The next
entry
is also placed in the right
most character after the display is shifted left one
character. The left most character is shifted
off
the end
and is lost.
1 2
14 15
O-Display
lstentry
OJ-
- -= I I l' I
::~ess
2 3 15 0 1
2nd entry
OJ
= = = = I
11
I 2
3 4 0 1 2
3rd entry
ITI
= = = J 1 I
21
3
1 2
14
15 0
17th entry
r2:E[
= = = 1151161171
.2
3
15
0 1
18th entry
~=
= = = 1161171181
RIGHT ENTRY MODE
(AUTO INCREMENT)
Note that now the display position and register address
do
not
correspond. Consequently, entering a character
to
an
arbitrary
position in the
Auto
Increment mode may have
unexpected results. Entry starting at Display RAM address
o with sequential entry is recommended.
Auto
Increment
In
the
Left Entry mode,
Auto
Incrementing causes the
address where the CPU will next write
to
be incremented
by
one
and the character appears in the next location.
With
non-Auto
Incrementing the
entry
is both
to
the same
RAM address and display position.
Entry
to
an arbitrary
address in the Auto
Increment mode has
no
undesirable
side effects and the result is predictable:
01234587
lst entry
11
I
1·1
I I I I I
o 1
234
567
2nd entry
11
12
I I I I I I
o 1
234
567
Command l'
12
I I
II
I 1 1
10010101
Display
RAM
Address
Enter next at Location 5 Auto Increment
o 1
234
567
3rd entry
11
I 2 I I I 1
3
I I I
o 1
234
567
4thentry
111211113141
LEFT ENTRY MODE
(AUTO INCREMENT)
!n
the
Right
Entry
mode,
Auto
Incrementing
and
non
Incrementing
have the same effect
as
in the Left
Entry
except
if
the address sequence is interrupted:
2 3 4 5 6 7 O
___
Display
1st
entry 1 I I I I I I
l'
I
:~~ess
23456701
2nd
entry
I!
I I
\1
I
21
23456701
Command
11
121
10010101
Jrd
entry
1
4th entry
Enter next
at
Location 5 Auto Increment
3
4
4 5 6
7
0
1
I 1
3
1
11
121
5 6
7
0 1
2
1
3
1
4
1
11
121
RIGHT ENTRY
MODE
(AUTO INCREMENT)
I
2
1
3
I
Starting at an arbitrary location operates
as
shown below:
9-76
Command
10010101
1st
entry
2nd
entry
8th entry
9th entry
o 1 2 3 4 5 6 7
__
Display
111I111I1:~~ess
Enter next
at
Location 5 Auto Increment
1
234
5 6 7 0
I I I I
11
I
23456701
I \
I I
14151617181112131
15161718191213
141
RIGHT ENTRY MODE
(AUTO INCREMENT)
AFN-Q0742A-07
