Linkage Kit Manual V6-00 - Fujitsu

APPENDIX C S RECORD FORMAT
C.1 S0 Type (Header Record)
This record is used for comments.
■ S0 Type (Header Record)
Figure C.1-1 S0 Type (Header Record)
S 0 I1 I2 0 0 0 0 c1 c2 c3 c4 c* c* s1 s2
(a) (b) (c) (d) (e) (f)
2 bytes 2 bytes 4 bytes n bytes 2 bytes
This record consists of the above five fields (a) to (e).
The S0 type is called the header type and is placed at the start of a file ahead of each record of S1 to S9.
Each field is set in ASCII code.
(a):
Type field. "S0" (0x5330) in ASCII code.
(b):
Indicates the number of bytes in (c), (d), and (e).
Actual 1-byte data is represented as 2-byte ASCII code in this format and the number of characters in
these fields divided by 2 is set.
I1 indicates the high-order digits and I2 indicates the low-order digits. Values in the range of 0 to 255
can be set.
It is "00" to "FF" in ASCII notation and "0x3030" to "0x4646" in hexadecimal notation.
(c):
This field is not used and normally "0000" in ASCII notation is set.
(d):
Messages such as version number management information are set.
For the setting method, see the example below.
(e):
Checksum.
Each 2-byte data of (b), (c), and (d) represented in ASCII notation is converted into 1-byte data in
hexadecimal notation. Each byte without a sign is added regardless of overflow.
One’s complement of the result is calculated and then set as 2-byte ASCII code.
s1 indicates the high-order digits.
One’s complement: value obtained by reversing each bit
(f):
Generally, control code (such as CR and LF) is added.
Data in this field is skipped until the start character "S" of (a) appears.
[Example]
S00600004844521B
Indicates ASCII character string "HDR"
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