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	<title>DevBlog</title>
	<link>http://simonowen.com/blog</link>
	<description>Stuff and nonsense</description>
	<lastBuildDate>Sat, 27 Feb 2010 13:48:55 +0000</lastBuildDate>
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	<item>
		<title>Space Invaders emulator</title>
		<description><![CDATA[I thought it was about time I added the Space Invaders &#8220;emulator&#8221; (binary port?) to my website, as I&#8217;d not touched it in over 3 years.  Most of the work to get it running was done, with just sound and display rotation left to add.  While mulling over the tricky display code I [...]]]></description>
		<link>http://simonowen.com/blog/2009/12/10/space-invaders-emulator/</link>
			</item>
	<item>
		<title>Further EDSK extensions</title>
		<description><![CDATA[I&#8217;ve been involved with various disk preservation groups over the last few years.  A large part of that has been for Spectrum +3 and Amstrad CPC disks, with SamDisk extended to support copy-protected disks.  The +3/CPC disks are usually stored in the Extended DSK (EDSK) image file format, designed to hold (almost) any [...]]]></description>
		<link>http://simonowen.com/blog/2009/03/21/further-edsk-extensions/</link>
			</item>
	<item>
		<title>FdInstall false-positive, again</title>
		<description><![CDATA[Avira Antivir strikes again, with another false-positive in the fdrawcmd.sys installer.  The current virus definitions report the FdInstall.dll installer plugin as infected with TR/Dropper.Gen (a &#8220;generic trojan detection routine&#8221;).
As before, avoiding UPX compression on the module is a magic fix.  It&#8217;s particularly frustrating because the compression isn&#8217;t hiding anything, since the original module [...]]]></description>
		<link>http://simonowen.com/blog/2008/12/23/fdinstall-false-positive-again/</link>
			</item>
	<item>
		<title>SAM/IP</title>
		<description><![CDATA[The SAM port of uIP seems to be on hold at the moment, so I&#8217;ve been looking at other IP stacks to use until it&#8217;s ready.  The most appealing is Mark Rison&#8217;s CPC/IP, not least because it&#8217;s written in Z80 and should work without extensive changes.  It also comes with a number of [...]]]></description>
		<link>http://simonowen.com/blog/2007/12/11/samip/</link>
			</item>
	<item>
		<title>Trinity Ethernet</title>
		<description><![CDATA[After a break of a few of months, I&#8217;m almost back on the development wagon.  I did the odd project tweak during that time but haven&#8217;t spent any quality time working on new features.
Last month I picked up one of the first Quazar Trinty boards.  Since then I&#8217;ve been working on the ethernet [...]]]></description>
		<link>http://simonowen.com/blog/2007/11/30/trinity-ethernet/</link>
			</item>
	<item>
		<title>ATTRibute port</title>
		<description><![CDATA[The attribute port (255) is part of SAM&#8217;s Spectrum compatibility, and implements a quirk of the original hardware.  On the Spectrum it returns the last value on the ULA side of the bus &#8212; an attribute byte over the main screen or 255 during the border.  A handful of Spectrum titles use it [...]]]></description>
		<link>http://simonowen.com/blog/2007/08/04/attribute-port/</link>
			</item>
	<item>
		<title>Atom Lite CF support</title>
		<description><![CDATA[With Edwin&#8217;s help, I&#8217;ve just finished adding Atom Lite 1.x support to both SimCoupe and SamDisk.
The new interface is a simplified version of the original Atom HDD interface, and is now primarily for Compact Flash use.  The Atom Lite uses an ATA feature for 8-bit data accesses, rather than normal 16-bit IDE mode, avoiding [...]]]></description>
		<link>http://simonowen.com/blog/2007/06/25/atom-lite-cf-support/</link>
			</item>
	<item>
		<title>SID Player v1.1</title>
		<description><![CDATA[I&#8217;ve updated SAM SID Player to version 1.1, addressing some issues with the original version:

Updated 6502 core
The recent core enhancements mean it&#8217;s now possible to trap SID writes from all instructions, without the need for hard-coded checks.  Control register re-triggering now works correctly in all tunes rather than just the few previously supported cases.
Unfortunately, [...]]]></description>
		<link>http://simonowen.com/blog/2007/06/07/sid-player-v11/</link>
			</item>
	<item>
		<title>AVI recording</title>
		<description><![CDATA[I&#8217;ve now done the bulk of the work needed for SimCoupe&#8217;s AVI recording feature, using 8-bit MS RLE encoding as planned.  It gives lossless video and (optionally) audio recording at up to full framerate, and should be no problem for most systems to handle in parallel to the emulation.  The encoder was written [...]]]></description>
		<link>http://simonowen.com/blog/2007/04/24/avi-recording/</link>
			</item>
	<item>
		<title>Apple 1 emulator</title>
		<description><![CDATA[This will probably be my last emulator for a while so I can return to normal projects.  I&#8217;d wanted to emulate the Apple 1 for quite a while, and didn&#8217;t think it should take more than a couple of hours to make a usable emulator.
The Apple 1 is a surprisingly simple device, with 1MHz [...]]]></description>
		<link>http://simonowen.com/blog/2007/03/19/apple-1-emulator/</link>
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