Picking up on the "Any help appreciated" comment:

• Always use strictures (use strict; use warnings;)
• Use lexical file handles
• You only need to call binmode once
• Use Perl for loops to advantage - avoid indexing where it's not needed

so your code could look like:

use strict;
use warnings;

my $fn = "delme.bin";
my $bName = 'eps_cm_0_pblk1';
my %gBuf = (eps_cm_0_pblk1 => ['0x00000019', '0x0000001b']);

open my $binOut, '>', $fn or die "Couldn't open '$fn' for writing: $!n
+";
binmode $binOut;

foreach my $element (@{$gBuf{$bName}}) {
    print $binOut pack ('C', hex $element);
}

close $binOut;
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.