Data I/O UniSite-xpi, User Manual

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6. Translation Formats
6-24 UniSite-xpi User Manual
Motorola EXORciser Format, Code 82
Motorola EXORciser data files may begin with an optional sign-on
record, which is initiated by the start characters S0. Valid data records
start with an 8-character prefix and end with a 2-character suffix.
Figure 6-10 shows a series of valid Motorola data records.
Each data record begins with the start characters S1. The third and fourth
characters represent the byte count, which expresses the number of data,
address, and checksum bytes in the record. The address of the first data
byte in the record is expressed by the last 4 characters of the prefix. Data
bytes follow, each represented by 2 hexadecimal characters. The number
of data bytes occurring must be three less than the byte count. The suffix
is a 2-character checksum, which equals the one’s complement of the
binary summation of the byte count, address, and data bytes.
The end-of-file record consists of the start characters S9, the byte count,
the address (in hex), and a checksum. The maximum record length is 250
data bytes.
Figure 6-10
An Example of Motorola EXORciser Format
S1130000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC
S00B00004441544120492F4FF3
S1130010FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEC
S1130020FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDC
S1130030FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFCC
S1130040FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBC
S9030000FC
End-of-File Record
Start Character
Byte Count
Sumcheck
Address
End-of-File Record
Optional Sign-On Record
(S0 = Sign-On Characters)
Byte Count + 3
Start Character
Data
Records
Sumcheck
of record
LEGEND
Nonprinting Carriage Return, line feed,
and nulls determined by null count
0082-2