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.TH "A8XD" 1 "2024-06-29" "0.2.1" "Urchlay's Atari 8-bit Tools"
.SH NAME
a8xd \- Atari ASCII aware hex dump
.SH SYNOPSIS
.sp
\fIa8xd\fP [\fB\-i\fP] [\fB\-m\fP] [\fB\-v\fP] [\fIinfile\fP]
.SH DESCRIPTION
.sp
\fBa8xd\fP is a hex dump utility, similar to \fBxxd\fP(1), but it
understands and prints ATASCII characters rather than ASCII.
.sp
The ATASCII codes are converted to UTF\-8, in the same way as
\fBa8cat\fP(1). Codes with the high bit set are displayed in inverse
video, using ANSI/VT\-100 escape sequences.
.sp
By default, the output is colorized:
.INDENT 0.0
.INDENT 3.5
.INDENT 0.0
.IP \(bu 2
Normal characters are green. This includes alphanumerics, spaces, and
punctuation.
.IP \(bu 2
Codes \fB$00\fP (null, or ATASCII heart) and \fB$9B\fP (EOL) are red.
.IP \(bu 2
Control characters are yellow. This includes codes \fB$01\fP to \fB$1F\fP,
(control + letters, escape, punctuation, and arrow keys), \fB$60\fP, \fB$7B\fP, \fB$7D\fP
(clear screen), \fB$7E\fP (backspace), and \fB$7F\fP (tab).
.UNINDENT
.UNINDENT
.UNINDENT
.sp
The colors and inverse rendering apply to both the ATASCII and hex bytes.
.sp
Without \fIinfile\fP, or if \fIinfile\fP is \fB\-\fP, \fBa8xd\fP reads from standard input.
.SH OPTIONS
.sp
Options marked with \fB*\fP are not yet implemented.
.INDENT 0.0
.TP
.B  \-i
Print XL/XE International Character Set conversions instead of ATASCII.
.UNINDENT
.INDENT 0.0
.TP
.B \-l \fIlen\fP
\fB*\fP Stop after dumping \fIlen\fP bytes. \fIlen\fP may be given in decimal or hex (with
leading \fI0x\fP or \fI$\fP).
.UNINDENT
.INDENT 0.0
.TP
.B  \-m
Monochrome mode. Disables color, but ATASCII characters with the high bit
set are still displayed in inverse.
.UNINDENT
.INDENT 0.0
.TP
.B \-o \fIoffset\fP
Add \fIoffset\fP to displayed file position. \fIoffset\fP can be given in decimal
or hex (with leading \fI0x\fP or \fI$\fP).
.TP
.B \-s \fI[\-]seek\fP
\fB*\fP Start at \fIseek\fP bytes. Without \fI\-\fP, this is an absolute offset. With \fI\-\fP,
it\(aqs relative to the end of the file. The \fI\-\fP option won\(aqt work when
reading from standard input. \fIseek\fP may be given in decimal or hex
(with leading \fI0x\fP or \fI$\fP).
.UNINDENT
.INDENT 0.0
.TP
.B  \-u
Use uppercase letters for hex digits; the default is lowercase.
.TP
.B  \-v
Verbose. Currently, this option is accepted, but it doesn\(aqt do anything yet.
.UNINDENT
.INDENT 0.0
.TP
.B \fB\-\-\fP
End of options; the nex argument is the filename. Use this if you\(aqre
trying to work with files whose names begin with \fI\-\fP\&.
.TP
.B \fB\-h\fP, \fB\-\-help\fP
Show built\-in help and exit.
.TP
.B \fB\-\-version\fP
Show version number and exit.
.UNINDENT
.SH NOTES
.sp
\fBa8xd\fP supports a useful subset of \fBxxd\fP(1) options. The main things
missing are:
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.IP \(bu 2
\fB\-r\fP (revert).
.IP \(bu 2
\fB\-include\fP (output as C include) and all options related to it.
.IP \(bu 2
\fB\-g\fP (grouping; \fBa8xd\fP always uses a group size of 1 byte).
.IP \(bu 2
\fB\-E\fP (EBCDIC mode).
.IP \(bu 2
\fB\-p\fP (PostScript/continuous dump).
.IP \(bu 2
\fB\-cols\fP (\fBa8xd\fP only supports 16 column dumps).
.IP \(bu 2
\fB\-b\fP (bits mode).
.UNINDENT
.SH COPYRIGHT
.sp
WTFPL. See \fI\%http://www.wtfpl.net/txt/copying/\fP for details.
.SH AUTHOR
.INDENT 0.0
.IP B. 3
Watson <\fI\%urchlay@slackware.uk\fP>; Urchlay on irc.libera.chat \fI##atari\fP\&.
.UNINDENT
.SH SEE ALSO
.sp
\fBa8eol\fP(1),
\fBa8utf8\fP(1),
\fBatr2xfd\fP(1),
\fBatrsize\fP(1),
\fBaxe\fP(1),
\fBblob2c\fP(1),
\fBblob2xex\fP(1),
\fBcart2xex\fP(1),
\fBcxrefbas\fP(1),
\fBdasm2atasm\fP(1),
\fBdumpbas\fP(1),
\fBf2toxex\fP(1),
\fBfenders\fP(1),
\fBlistbas\fP(1),
\fBprotbas\fP(1),
\fBrenumbas\fP(1),
\fBrom2cart\fP(1),
\fBunmac65\fP(1),
\fBunprotbas\fP(1),
\fBvxrefbas\fP(1),
\fBxexamine\fP(1),
\fBxexcat\fP(1),
\fBxexsplit\fP(1),
\fBxfd2atr\fP(1),
\fBxex\fP(5),
\fBatascii\fP(7).
.sp
Any good Atari 8\-bit book: \fIDe Re Atari\fP, \fIThe Atari BASIC  Reference
Manual\fP,  the  \fIOS Users\(aq Guide\fP, \fIMapping the Atari\fP, etc.
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