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 uppercase 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. Many PROM and EPROM programming devices accept this format. Beginning in 1975, the format was utilized by Intellec Series II ISIS-II systems supporting diskette drives, with files using the file extension HEX. : 11 In 1973, Intel's "software group" consisted only of Bill Byerly and Kenneth Burgett, and Gary Kildall as an external consultant doing business as Microcomputer Applications Associates (MAA) and founding Digital Research in 1974. It was also used to specify memory contents to Intel for ROM production, which previously had to be encoded in the much less efficient BNPF (Begin-Negative-Positive-Finish) format. The Intel hex format was originally designed for Intel's Intellec Microcomputer Development Systems : 10–11 (MDS) in 1973 in order to load and execute programs from paper tape. There are various tools to convert files between hexadecimal and binary format (i.e. The HEX file is then read by a programmer to write the machine code into a PROM or is transferred to the target system for loading and execution. Common file extensions used for the resulting files are. In some applications, the Intel hex format is also used as a container format holding packets of stream data. In a typical application, a compiler or assembler converts a program's source code (such as in C or assembly language) to machine code and outputs it into a object or executable file in hexadecimal (or binary) format. The format is commonly used for programming microcontrollers, EPROMs, and other types of programmable logic devices and hardware emulators. Intel hexadecimal object file format, Intel hex format or Intellec Hex is a file format that conveys binary information in ASCII text form, making it possible to store on non-binary media such as paper tape, punch cards, etc., to display on text terminals or be printed on line-oriented printers. For the file format used by GNU Unifont, see GNU Unifont § .hex format.
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