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#Hex file crc 16 calculator code
#Hex file crc 16 calculator series

#Hex file crc 16 calculator code

Start code Byte count Address Record type Data Checksum Checksum calculation Ī record's checksum byte is the two's complement of the least significant byte (LSB) of the sum of all decoded byte values in the record preceding the checksum.

Checksum, two hex digits, a computed value that can be used to verify the record has no errors.Īs a visual aid, the fields of Intel HEX records are colored throughout this article as follows:.

The meaning and interpretation of data bytes depends on the application. Some records omit this field ( n equals zero).

Data, a sequence of n bytes of data, represented by 2 n hex digits.

Record type (see record types below), two hex digits, 00 to 05, defining the meaning of the data field.

Base addresses and address offsets are always expressed as big endian values. The base address, which defaults to zero, can be changed by various types of records. The physical address of the data is computed by adding this offset to a previously established base address, thus allowing memory addressing beyond the 64 kilobyte limit of 16-bit addresses. Address, four hex digits, representing the 16-bit beginning memory address offset of the data.16 (0x10) and 32 (0x20) are commonly used byte counts. Byte count, two hex digits (one hex digit pair), indicating the number of bytes (hex digit pairs) in the data field.Start code, one character, an ASCII colon ':'.Each text line is called a record.Ī record (line of text) consists of six fields (parts) that appear in order from left to right: The binary numbers may represent data, memory addresses, or other values, depending on their position in the line and the type and length of the line. Each text line contains hexadecimal characters that encode multiple binary numbers. Intel HEX consists of lines of ASCII text that are separated by line feed or carriage return characters or both.

#Hex file crc 16 calculator series

Since 1975, it was also utilized by the MCS Series II floppy-disk based ISIS-II systems, using the file extension HEX. The format was used to program (E)PROMs via paper tapes (in Intellec Hex Paper Tape Format) or to control punched card-controlled EPROM programmers (through the Intellec Hex Computer Punched Card Format). Also, it served the purpose of easing the data transmission from customers to Intel for ROM production. The Intel hex format was originally designed for Intel's Intellec Microcomputer Development Systems (MDS) in 1973 in order to load and execute programs from paper tape in order to replace the "paper-intensive" BNPF/ BPNF format.