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EnigmA Amiga Run 1996 March
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EnigmA AMIGA RUN 05 (1996)(G.R. Edizioni)(IT)[!][issue 1996-03][Skylink CD IV].iso
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earcd
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util2
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hexdump.lha
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hexdump
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README
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1995-11-09
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===========================
HD Hexadecimal Dump Program
===========================
This program came about because I was not satisfied with the output from
the standard UNIX od utility. It is basically a case of personal preference
but I hope that some people will find this useful and perhaps preferable
to od. It is not quite as flexible as od in that it can only output in hex
and ascii but it is more flexible than od in format and control of output.
One of the the main considerations when writing the hexprint routine was speed,
hence the offset printing and compression can be compiled out if the
appropriate flags are not defined, giving a faster but simpler dump routine.
Unfortunately as a result the code is not pretty!
Porting of the code to a MS_DOS environment took about 15 minutes (most of
which was spent looking for the correct compiler flags and include files) and
so can easily be used on considerably inferior systems without any problems.
- hd.c
This contains main, file open and close and the argument processor.
- hexprint.c
The file hexprint.c contains a routine which can be used independantly
from the main hd program in the debugging of your own programs for outputing
areas of memory in a hexadecimal form.
It uses bcopy and bcmp or memcpy and memcmp routines depending on
whether the ATT compilation flag is set or not. Specifying ATT causes bcopy
and bcmp to be used. Hence if compilation is being done on a machine running
an AT&T version of unix use the ATT flag.
The H_OFFSETS and H_COMPRESS compilation flags switch on offset printing
and compression, these need to be used in conjunction with the hex_compression
and offset_print flags which must be set to true in the main program or
enclosing scope of the called hexprint routine. The offset variable must be
set each time the hexprint routine is entered otherwise the offset numbering
will always start at 0, so if you want to print out a number of buffers in
succession with continuous offset numbering you need to update the
offset after each call of hexprint, with the size of the buffer
last passed to hexprint.
Omission of H_OFFSETS and H_COMPRESS means you can forget everything I just
said and just call the hexprint routine straight.