(6) Check
sum
The check sum
is
created
as
16
bit
data by adding data
(4).
9. HP-64000 Absolute
•
I
•
8
bit
• • •
•••
•
••
•••••••• •
.....................................
• •
•••• ••••
•
•
•••••••••
• • • • • • • • • •
::wk:::,-,~L.....J:::;;::'
=::;;',-,:;u~'--'w;:::,
=::;;
..
=======::j,
;:::L..J~w::
1
bit
1234562
7
8 9
L--
___
----',
L'
____
-,-
_____
----"
LJ
b
a
a)
Header record
(1) Indicates the number
of
words in a record.
(2) Indicates data
word
length.
(3) Indicates
an
address
mode
base.
(4) Indicates a transfer address.
c
(5) Indicates check sum data. (2) + (3) + (4) =
sum
data
b)
Data record
(6) Indicates a data byte count.
(7) Indicates binary data.
(8) Indicates check sum data. (6)
+ (2) + (7) =
sum
data
c)
End record
(9) Indicates the end
of
data.
HEX
=
00
56
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