srec_emon52 - Elektor Monitor (EMON52) file format
This format is used by the monitor EMON52, devolped by the European
electronics magazine Elektor (Elektuur in Holland). Elektor wouldn’t
be Elektor if they didn’t try to reinvent the wheel. It’s a mystery
why they didn’t use an existing format for the project. Only the
Elektor Assembler will produce this file format, reducing the choice of
development tools dramatically.
All data lines are called records, and each record contains the
following four fields:
|cc | aaaa | : | dd ... dd | ssss |
The field are defined-as-follows:+-----------+------+
cc The byte count. A two digit hex value (1 byte), counting the
actual data bytes in the record. The byte count is seperated
from the next field by a space.
aaaa The address field. A four hex digit (2 byte) number
representing the first address to be used by this record.
: The address field and the data field are seperated by a colon.
dd The actual data of this record. There can be 1 to 255 data
bytes per record (see cc) All bytes in the record are seperated
from each other (and the checksum) by a space.
ssss Data Checksum, adding all bytes of the dataline together,
forming a 16 bit checksum. Covers only all the data bytes of
Please note that there is no End Of File record defined.
The byte count cc counts the actual data bytes in the current record.
Usually records have 16 data bytes. I don’t know what the maximum
number of data bytes is. It depends on the size of the data buffer in
This is the address where the first data byte of the record should be
stored. After storing that data byte, the address is incremented by 1
to point to the address for the next data byte of the record. And so
on, until all data bytes are stored.
The address is represented by a 4 digit hex number (2 bytes), with the
The payload of the record is formed by the Data field. The number of
data bytes expected is given by the Byte Count field.
The checksum is a 16 bit result from adding all data bytes of the
In general, binary data will expand in sized by approximately 3.8 times
when represented with this format.
Here is an example of an EMON52 file:
10 0000:57 6F 77 21 20 44 69 64 20 79 6F 75 20 72 65 61 0564
10 0010:6C 6C 79 20 67 6F 20 74 68 72 6F 75 67 68 20 61 05E9
10 0020:6C 6C 20 74 68 69 73 20 74 72 6F 75 62 6C 65 20 05ED
10 0030:74 6F 20 72 65 61 64 20 74 68 69 73 20 73 74 72 05F0
04 0040:69 6E 67 21 015F
This man page was taken from the above Web page. It was written by San