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srec_mos_tech(5)	      File Formats Manual	      srec_mos_tech(5)

NAME
       srec_mos_tech - MOS Technology file format

DESCRIPTION
       The  MOS	Technology format allows binary	files to be uploaded and down-
       loaded between between a	computer system	(such as a PC,	Macintosh,  or
       workstation)  and  an emulator or evaluation board for microcontrollers
       and microprocessors.

   The Lines
       Each line consists of 5 fields.	These are the  length  field,  address
       field,  data  field,  and  the checksum.	 The lines always start	with a
       semicolon (;) character.

   The Fields
		   +--+--------+---------+------+----------+------+
		   |; |	Length | Address | Data	| Checksum | CRLF |
		   +--+--------+---------+------+----------+------+
       Length  The record length field is a 2 character	(1  byte)  field  that
	       specifies  the  number  of data bytes in	the record.  Typically
	       this is 24 or less.

       Address This is a 2-byte	address	that specifies where the data  in  the
	       record is to be loaded into memory, big-endian.

       Data    The  data  field	 contains the executable code, memory-loadable
	       data or descriptive information to be transferred.

       Checksum
	       The checksum is an 2-byte field that represents the least  sig-
	       nificant	 two bytes of the the sum of the values	represented by
	       the pairs of characters making up the record's length, address,
	       and data	fields,	big-endian.

   End of File
       The  final  line	 should	 have a	data length of zero, and the data line
       count in	the address field.  The	checksum is not	the usual checksum, it
       is instead a repeat of the data line count.

   Size	Multiplier
       In  general,  binary  data  will	 expand	in sized by approximately 2.54
       times when represented with this	format.

EXAMPLE
       Here is an example MOS Technology format	file.  It  contains  the  data
       "Hello, World" to be loaded at address 0.
	      ;0C000048656C6C6F2C20576F726C640454
	      ;0000010001

COPYRIGHT
       srec_cat	version	1.64
       Copyright  (C)  1998,  1999,  2000, 2001, 2002, 2003, 2004, 2005, 2006,
       2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Peter Miller

       The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
       the 'srec_cat -VERSion License' command.	 This is free software and you
       are welcome to redistribute it under certain  conditions;  for  details
       use the 'srec_cat -VERSion License' command.

MAINTAINER
       Scott Finneran	E-Mail:	  scottfinneran@yahoo.com.au
       Peter Miller	E-Mail:	  pmiller@opensource.org.au

KIM-1 User Manual - Appendix F - Paper Tape Format
       (The   following	  information	is  reproduced	from  http://users.te-
       lenet.be/kim1-6502/6502/usrman.html#F just in case it vanishes from the
       Web.)

       The paper tape LOAD and DUMP routines store and retrieve	data in	a spe-
       cific format designed to	insure error free recovery.  Each byte of data
       to  be  stored  is  converted to	two half bytes.	 The half bytes	(whose
       possible	values are 0 to	F HEX) are translated into their ASCII equiva-
       lents and written out onto paper	tape in	this form.

       Each  record  outputted	begins with a ";" character (ASCII 3B) to mark
       the start of a valid record.  The next byte transmitted (18HEX) or  (24
       decimal)	 is  the  number  of  data bytes contained in the record.  The
       record's	starting address High (1 byte, 2 characters), starting address
       Lo  (1  byte, 2 characters), and	data (24 bytes,	48 characters) follow.
       Each record is terminated by the	record's check-sum (2 bytes, 4 charac-
       ters),  a  carriage  return  (ASCII  0D), line feed (ASCII 0A), and six
       "NULL" characters (ASCII	00).  (NULL characters cause a blank  area  on
       the paper tape.)

       The  last record	transmitted has	zero data bytes	(indicated by ;00) The
       starting	address	field is replaced by a four digit  Hex	number	repre-
       senting the total number	of data	records	contained in the transmission,
       followed	by the records usual check-sum digits.	 An  "XOFF"  character
       ends the	transmission.
	      ;180000FFEEDDCCBBAA0099887766554433221122334455667788990AFC
	      ;0000010001
       During  a  "LOAD" all incoming data is ignored until a ";" character is
       received.  The receipt of non  ASCII  data  or  a  mismatch  between  a
       records	calculated  check-sum  and  the	 check-sum read	from tape will
       cause an	error condition	to be recognized by  KIM.   The	 check-sum  is
       calculated by adding all	data in	the record except the ";" character.

       The  paper tape format described	is compatible with all other MOS Tech-
       nology, Inc. software support programs.

Reference Manual		    SRecord		      srec_mos_tech(5)

NAME | DESCRIPTION | EXAMPLE | COPYRIGHT | MAINTAINER | KIM-1 User Manual - Appendix F - Paper Tape Format

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