From c3b0fa04a663fe233765b83d3be41a42aa08c25d Mon Sep 17 00:00:00 2001 From: "Juan J. Martinez" Date: Mon, 3 May 2021 08:21:10 +0100 Subject: Initial import for public release --- tools/hex2bin-2.0/doc/srec.txt | 447 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 447 insertions(+) create mode 100644 tools/hex2bin-2.0/doc/srec.txt (limited to 'tools/hex2bin-2.0/doc/srec.txt') diff --git a/tools/hex2bin-2.0/doc/srec.txt b/tools/hex2bin-2.0/doc/srec.txt new file mode 100644 index 0000000..ea63d31 --- /dev/null +++ b/tools/hex2bin-2.0/doc/srec.txt @@ -0,0 +1,447 @@ +S-Records + + + -S-Record Format- + + Chaplin@keinstr.uucp (Roger Chaplin) reposted an article written + by mcdchg!motmpl!ron (Ron Widell) that explained how Motorola + S-Records are formatted. This comes from a unix man page. No + mention of which version of Unix is specified. This section + of the FAQ is a bit long. An anonymous ftp archive is currently + being sought. When one is found, the section will be placed in + the archive. + + + SREC(4) UNIX 5.0 (03/21/84) SREC(4) + + + An S-record file consists of a sequence of specially formatted + ASCII character strings. An S-record will be less than or equal to + 78 bytes in length. + + The order of S-records within a file is of no significance and no + particular order may be assumed. + + The general format of an S-record follow: + + +------------------//-------------------//-----------------------+ + | type | count | address | data | checksum | + +------------------//-------------------//-----------------------+ + + type A char-2- field. These characters describe the + type of record (S0, S1, S2, S3, S5, S7, S8, or + S9). + count A char-2- field. These characters when paired and + interpreted as a hexadecimal value, display the + count of remaining character pairs in the record. + + address A char-4,6, or 8- field. These characters grouped + and interpreted as a hexadecimal value, display + the address at which the data field is to be + loaded into memory. The length of the field + depends on the number of bytes necessary to hold + the address. A 2-byte address uses 4 characters, + a 3-byte address uses 6 characters, and a 4-byte + address uses 8 characters. + data A char -0-64- field. These characters when paired + and interpreted as hexadecimal values represent + the memory loadable data or descriptive + information. + + checksum A char-2- field. These characters when paired and + interpreted as a hexadecimal value display the + least significant byte of the ones complement of + the sum of the byte values represented by the + pairs of characters making up the count, the + address, and the data fields. + + Each record is terminated with a line feed. If any + additional or different record terminator(s) or delay + characters are needed during transmission to the target + system it is the responsibility of the transmitting program + to provide them. + + S0 Record The type of record is 'S0' (0x5330). The address + + + field is unused and will be filled with zeros + (0x0000). The header information within the data + field is divided into the following subfields. + + mname is char-20- and is the + module name. + ver is char-2- and is the + version number. + + rev is char-2- and is the + revision number. + description is char-0-36- and is a + text comment. + + Each of the subfields is composed of ASCII bytes + whose associated characters, when paired, + represent one byte hexadecimal values in the case + of the version and revision numbers, or represent + the hexadecimal values of the ASCII characters + comprising the module name and description. + + S1 Record The type of record field is 'S1' (0x5331). The + address field is interpreted as a 2-byte address. + The data field is composed of memory loadable + data. + S2 Record The type of record field is 'S2' (0x5332). The + address field is interpreted as a 3-byte address. + The data field is composed of memory loadable + data. + + S3 Record The type of record field is 'S3' (0x5333). The + address field is interpreted as a 4-byte address. + The data field is composed of memory loadable + data. + S5 Record The type of record field is 'S5' (0x5335). The + address field is interpreted as a 2-byte value + and contains the count of S1, S2, and S3 records + previously transmitted. There is no data field. + + S7 Record The type of record field is 'S7' (0x5337). The + address field contains the starting execution + address and is interpreted as 4-byte address. + There is no data field. + S8 Record The type of record field is 'S8' (0x5338). The + address field contains the starting execution + address and is interpreted as 3-byte address. + There is no data field. + + S9 Record The type of record field is 'S9' (0x5339). The + address field contains the starting execution + address and is interpreted as 2-byte address. + There is no data field. + + EXAMPLE + + Shown below is a typical S-record format file. + + S00600004844521B + S1130000285F245F2212226A000424290008237C2A + S11300100002000800082629001853812341001813 + S113002041E900084E42234300182342000824A952 + S107003000144ED492 + S5030004F8 + S9030000FC + + The file consists of one S0 record, four S1 records, one S5 + record and an S9 record. + + The S0 record is comprised as follows: + + S0 S-record type S0, indicating it is a header + record. + 06 Hexadecimal 06 (decimal 6), indicating that six + character pairs (or ASCII bytes) follow. + + 00 00 Four character 2-byte address field, zeroes in + this example. + 48 ASCII H, D, and R - "HDR". + + 1B The checksum. + + The first S1 record is comprised as follows: + S1 S-record type S1, indicating it is a data record + to be loaded at a 2-byte address. + + 13 Hexadecimal 13 (decimal 19), indicating that + nineteen character pairs, representing a 2 byte + address, 16 bytes of binary data, and a 1 byte + checksum, follow. + 00 00 Four character 2-byte address field; hexadecimal + address 0x0000, where the data which follows is to + be loaded. + + 28 5F 24 5F 22 12 22 6A 00 04 24 29 00 08 23 7C Sixteen + character pairs representing the actual binary + data. + 2A The checksum. + + The second and third S1 records each contain 0x13 (19) + character pairs and are ended with checksums of 13 and 52, + respectively. The fourth S1 record contains 07 character + pairs and has a checksum of 92. + + The S5 record is comprised as follows: + + S5 S-record type S5, indicating it is a count record + indicating the number of S1 records. + + + + 03 Hexadecimal 03 (decimal 3), indicating that three + character pairs follow. + + 00 04 Hexadecimal 0004 (decimal 4), indicating that + there are four data records previous to this + record. + F8 The checksum. + + The S9 record is comprised as follows: + + S9 S-record type S9, indicating it is a termination + record. + 03 Hexadecimal 03 (decimal 3), indicating that three + character pairs follow. + + 00 00 The address field, hexadecimal 0 (decimal 0) + indicating the starting execution address. + FC The checksum. + + + -Intel Hex ASCII Format- + + Intel HEX-ASCII format takes the form: + + +----------------------------------- Start Character + | + | +-------------------------------- Byte Count + | | (# of data bytes) + | | + | | +-------------------------- Address of first data. + | | | + | | | +-------------------- Record Type (00 data, + | | | | 01 end of record) + | | | | + | | | | +------------ Data Bytes + | | | | | + | | | | | +---- Checksum + | | | | | | + | / \ / \ / \ / \ / \ + : B C A A A A T T H H ... H H C C + + An examples: + + :10000000DB00E60F5F1600211100197ED300C3004C + :1000100000000101030307070F0F1F1F3F3F7F7FF2 + :01002000FFE0 + :00000001FF + + This information comes from _Microprocessors and Programmed + Logic_, Second Edition, Kenneth L. Short, 1987, Prentice-Hall, + ISBN 0-13-580606-2. + + Provisions have been made for data spaces larger than 64 kBytes. + The above reference does not discuss them. I suspect there is + a start of segment type record, but I do not know how it is + implemented. + +---------------------------------------------------------------------------- + +/* This file contains source code to read a Motorola S-record file into +** a memory image. The size of the file cannot exceed BUFSIZE of data. +** The image is then written to disk either as binary data starting at +** address 0 with no data gaps, or as a C array of unsigned longs. +** Input lines must be no longer than MAXLINE. No check is made! +** +** Author: Eric McRae, Electro-Logic Machines, Inc. +** Date: Copyright 1994 +** +** This source code is made available to the public "as is". No +** warranty is given or implied for it's proper operation. This source +** code may be used in whole or in part as long as this copyright is +** included. +*/ +#include +#include +#include + +/* Comment the following line for non PC applications */ +#define PCDOS + +/* Uncomment the following line if you want a binary output instead of +** a structure +*/ +/* #define BINARY */ + +#ifdef PCDOS /* Intel x86 architecture */ +#define BUFSIZE 49152 /* 48K to avoid segment hopping */ +#else /* Any reasonable (non-segmented) arch... */ +#define BUFSIZE 65536 /* As big as you want */ +#endif + +#define MAXLINE 256 /* Length of longest input line + 1 */ +/* Globals */ +FILE *infilePH, *outfilePH; /* Handles for input and output files */ +unsigned char *bufAC, /* Allocated image buffer */ + *highestPC = NULL; /* Highest buffer address written */ + +/* Change this string to reflect the name of the output array */ +char headerAC[] = "unsigned long sRec[] =\n{\n"; + +/* Predeclarations */ +int parsebufN( char * ); /* Does the actual parsing */ + +void main(int argc, const char * argv[]) +{ + int c, /* Temp char storage */ + resN; /* result status */ + char *lbufPC, lbufAC[MAXLINE]; + int linectrN = 0; /* Used to correlate parse fail to input line */ + +#ifndef BINARY + int i; + unsigned long *codePL; + unsigned char *codePC; +#endif + + /* Check the argument count */ + if( argc != 3 ) /* If didn't specify input and output files */ + { + printf("Usage: %s: infile outfile\n", argv[0] ); + exit(1); + } + + /* OK, let's open some files */ + if( ( infilePH = fopen( argv[1], "r" ) )== NULL ) + { + printf("%s: Couldn't open input file %s\n", argv[0], argv[1] ); + exit(2); + } + + if( ( outfilePH = fopen( argv[2], "w" ) ) == NULL ) + { + printf("%s: Couldn't open output file %s\n", argv[0], argv[3] ); + exit(3); + } + + /* OK, get a buffer and clear it. */ + if( (bufAC = calloc( (size_t)BUFSIZE, (size_t)1 )) == NULL ) + { + printf("%s: Couldn't malloc memory for buffer\n", argv[0] ); + exit(4); + } + + lbufPC = lbufAC; /* Point at beginning of line buffer */ + while( c = fgetc( infilePH )) + { + if( (c == '\n') || (c == EOF) ) /* If found end of line or file */ + { /* Parse the Line */ + if( ( c == EOF ) && ( ferror( infilePH ) ) ) + { + printf("%s: Error reading input file\n", argv[0] ); + exit(5); + } + else + { /* OK, have a complete line in buffer */ + linectrN++; /* Increment line counter */ + if( lbufPC == lbufAC ) + break; /* ignore blank lines */ + *lbufPC = 0; /* Terminate the line string */ + if( resN = parsebufN( lbufAC ) ) /* Parse data record to mem */ + { + printf("%s: Error reading input file at line %d, return code = %d\n", + argv[0], linectrN, resN ); + exit( resN ); + } + lbufPC = lbufAC; /* Repoint line buffer pointer */ + } /* End of have a complete line */ + } + else + *lbufPC++ = c; /* Place char into line buffer */ + } + + /* At this point, the input file has been emptied. Now dispose of the + ** output data according to compilation mode. + */ + +#ifdef BINARY + + /* Write the buffer back to disk as a binary image */ + resN = fwrite( bufAC, 1, (size_t)((highestPC - bufAC) + 1), outfilePH ); + if( resN != (int)( (highestPC - bufAC) + 1) ) + { + printf("%s: Error writing output file\n", argv[0] ); + exit( 6 ); + } + +#else + /* Produce a file that can be included in a C program. Data is read + ** from buffer as bytes to avoid portability/endian problems with + ** this program. + */ + /* Output header first, then 1 long per line */ + fwrite( (void *)headerAC, 1, (size_t)(sizeof( headerAC )-1), outfilePH ); + + codePL = (unsigned long *)bufAC; + for( i = (highestPC - bufAC + 1) / 4; i; i-- ) /* for each long */ + { + codePC = (unsigned char *)codePL++; + sprintf(lbufAC, "0x%02x%02x%02x%02x%s", + *codePC, *(codePC + 1), *(codePC + 2), *(codePC + 3), + i == 1 ? "\n" : ",\n" ); /* No comma after final long */ + fwrite( lbufAC, 1, (size_t)(strlen( lbufAC )), outfilePH ); + } + /* OK, data has been written out, close end of array */ + fwrite( "};\n", 1, (size_t)3, outfilePH ); +#endif +} + +/* Function: parsebufV +** Parses an S-record in the buffer and writes it into the buffer +** if it is has a valid checksum. +** +** Args: pointer to character buffer for null terminated line +** Returns: int result code: 0 = success, else failure +*/ +int parsebufN( char *lbufPC ) +{ + unsigned long addrL; + unsigned char cksmB, /* checksum of addr, count, & data length */ + *bufPC; /* Pointer into memory array */ + int i, countN, /* Number of bytes represented in record */ + oheadN, /* Number of overhead (addr + chksum) bytes */ + tvalN; /* Temp for check checksum */ + + switch( *(lbufPC+1) ) /* examine 2nd character on the line */ + { + case '1': /* 16 bit address field */ + if( sscanf(lbufPC, "S1%2x%4lx", &countN, &addrL ) != 2 ) + return( 10 ); /* Flag error in S1 record */ + oheadN = 3; /* 2 address + 1 checksum */ + break; + + case '2': /* 24 bit address field */ + if( sscanf(lbufPC, "S2%2x%6lx", &countN, &addrL ) != 2 ) + return( 11 ); /* Flag error in S2 record */ + oheadN = 4; /* 3 address + 1 checksum */ + break; + + case '3': /* 32 bit address field */ + if( sscanf(lbufPC, "S3%2x%8lx", &countN, &addrL ) != 2 ) + return( 12 ); /* Flag error in S3 record */ + oheadN = 5; /* 4 address + 1 checksum */ + break; + + default: /* ignore all but S1,2,3 records. */ + return( 0 ); + } + + if( addrL > BUFSIZE ) return( 13 ); /* if address exceeds buffer size */ + bufPC = bufAC + addrL; /* otherwise, point to right spot in buffer */ + + /* OK now see if checksum is OK, while reading data to buffer */ + cksmB = 0; + countN++; /* Bump counter to read final checksum too */ + for( i = 1; i <= countN; i++ ) + { + sscanf( lbufPC + i*2, "%2x", &tvalN ); /* Scan a 2 hex digit byte */ + cksmB += (unsigned char)tvalN; + if( ( i > oheadN ) && ( i < countN ) ) /* If scanned a data byte */ + *bufPC++ = (unsigned char) tvalN; /* write it to the buffer */ + } + if( cksmB += 1 ) return( 14 ); /* flag checksum error */ + + if( (bufPC - 1) > highestPC ) + highestPC = bufPC - 1; /* track highest address loaded */ + + return( 0 ); /* Successful return */ +} + + + -- cgit v1.2.3