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	<title>reassembler &#8211; Set Side B</title>
	<atom:link href="https://setsideb.com/tag/reassembler/feed/" rel="self" type="application/rss+xml" />
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	<description>The Flipside of Gaming</description>
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	<title>reassembler &#8211; Set Side B</title>
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	<item>
		<title>Sonic on the Amiga: Mega Drive Sprite Pushing</title>
		<link>https://setsideb.com/sonic-on-the-amiga-mega-drive-sprite-pushing/</link>
					<comments>https://setsideb.com/sonic-on-the-amiga-mega-drive-sprite-pushing/#respond</comments>
		
		<dc:creator><![CDATA[rodneylives]]></dc:creator>
		<pubDate>Thu, 25 Dec 2025 15:00:00 +0000</pubDate>
				<category><![CDATA[retro]]></category>
		<category><![CDATA[amiga]]></category>
		<category><![CDATA[development]]></category>
		<category><![CDATA[genesis]]></category>
		<category><![CDATA[megadrive]]></category>
		<category><![CDATA[reassembler]]></category>
		<category><![CDATA[sonic]]></category>
		<category><![CDATA[sprites]]></category>
		<guid isPermaLink="false">https://setsideb.com/?p=11336</guid>

					<description><![CDATA[It&#8217;s Christmas Day! So naturally the best thing to do is to settle in for a deep dive on programming sprites on an Amiga (20 minutes), from the guy who recently ported Outrun to the Amiga, reassembler. The Amiga has hardware sprites, but they&#8217;re fairly limited. Most programmers prefer to use its powerful blitter hardware &#8230; <a href="https://setsideb.com/sonic-on-the-amiga-mega-drive-sprite-pushing/" class="more-link">Continue reading<span class="screen-reader-text"> "Sonic on the Amiga: Mega Drive Sprite Pushing"</span></a>]]></description>
										<content:encoded><![CDATA[
<p>It&#8217;s Christmas Day! So naturally the best thing to do is to settle in for <a href="https://www.youtube.com/watch?v=JGKqkJwv2P8">a deep dive on programming sprites on an Amiga</a> (20 minutes), from the guy who recently <a href="https://www.youtube.com/watch?v=O_QP2qQJuXc">ported Outrun to the Amiga</a>, reassembler.</p>



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe title="Blitting SONIC&#039;s sprites on the AMIGA: Make or break?" width="840" height="473" src="https://www.youtube.com/embed/JGKqkJwv2P8?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
</div></figure>



<p>The Amiga has hardware sprites, but they&#8217;re fairly limited. Most programmers prefer to use its powerful blitter hardware to simulate sprites, drawing them to screen memory much more rapidly than non-blitter hardware can. For more information, I refer you to the video.</p>



<p>That&#8217;s it for today, but there be something more substantial tomorrow&#8230;.</p>
<div class="saboxplugin-wrap" itemtype="http://schema.org/Person" itemscope itemprop="author"><div class="saboxplugin-tab"><div class="saboxplugin-gravatar"><img alt='rodneylives' src='https://secure.gravatar.com/avatar/cb688ada8b517e838b06bdbcddb8d1ea3dd56de2e66848938e8c6568002a4fa9?s=100&#038;d=mm&#038;r=g' srcset='https://secure.gravatar.com/avatar/cb688ada8b517e838b06bdbcddb8d1ea3dd56de2e66848938e8c6568002a4fa9?s=200&#038;d=mm&#038;r=g 2x' class='avatar avatar-100 photo' height='100' width='100' itemprop="image"/></div><div class="saboxplugin-authorname"><a href="https://setsideb.com/author/rodneylives/" class="vcard author" rel="author"><span class="fn">rodneylives</span></a></div><div class="saboxplugin-desc"><div itemprop="description"></div></div><div class="clearfix"></div><div class="saboxplugin-socials "><a title="Twitter" target="_self" href="https://twitter.com/rodneylives" rel="nofollow noopener" class="saboxplugin-icon-grey"><svg aria-hidden="true" class="sab-twitter" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 30 30"><path d="M26.37,26l-8.795-12.822l0.015,0.012L25.52,4h-2.65l-6.46,7.48L11.28,4H4.33l8.211,11.971L12.54,15.97L3.88,26h2.65 l7.182-8.322L19.42,26H26.37z M10.23,6l12.34,18h-2.1L8.12,6H10.23z" /></svg></span></a><a title="Instagram" target="_self" href="https://www.instagram.com/rodneysnotdead/" rel="nofollow noopener" class="saboxplugin-icon-grey"><svg aria-hidden="true" class="sab-instagram" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path fill="currentColor" d="M224.1 141c-63.6 0-114.9 51.3-114.9 114.9s51.3 114.9 114.9 114.9S339 319.5 339 255.9 287.7 141 224.1 141zm0 189.6c-41.1 0-74.7-33.5-74.7-74.7s33.5-74.7 74.7-74.7 74.7 33.5 74.7 74.7-33.6 74.7-74.7 74.7zm146.4-194.3c0 14.9-12 26.8-26.8 26.8-14.9 0-26.8-12-26.8-26.8s12-26.8 26.8-26.8 26.8 12 26.8 26.8zm76.1 27.2c-1.7-35.9-9.9-67.7-36.2-93.9-26.2-26.2-58-34.4-93.9-36.2-37-2.1-147.9-2.1-184.9 0-35.8 1.7-67.6 9.9-93.9 36.1s-34.4 58-36.2 93.9c-2.1 37-2.1 147.9 0 184.9 1.7 35.9 9.9 67.7 36.2 93.9s58 34.4 93.9 36.2c37 2.1 147.9 2.1 184.9 0 35.9-1.7 67.7-9.9 93.9-36.2 26.2-26.2 34.4-58 36.2-93.9 2.1-37 2.1-147.8 0-184.8zM398.8 388c-7.8 19.6-22.9 34.7-42.6 42.6-29.5 11.7-99.5 9-132.1 9s-102.7 2.6-132.1-9c-19.6-7.8-34.7-22.9-42.6-42.6-11.7-29.5-9-99.5-9-132.1s-2.6-102.7 9-132.1c7.8-19.6 22.9-34.7 42.6-42.6 29.5-11.7 99.5-9 132.1-9s102.7-2.6 132.1 9c19.6 7.8 34.7 22.9 42.6 42.6 11.7 29.5 9 99.5 9 132.1s2.7 102.7-9 132.1z"></path></svg></span></a><a title="Html5" target="_self" href="https://www.metafilter.com/user/23306" rel="nofollow noopener" class="saboxplugin-icon-grey"><svg aria-hidden="true" class="sab-html5" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512"><path fill="currentColor" d="M0 32l34.9 395.8L191.5 480l157.6-52.2L384 32H0zm308.2 127.9H124.4l4.1 49.4h175.6l-13.6 148.4-97.9 27v.3h-1.1l-98.7-27.3-6-75.8h47.7L138 320l53.5 14.5 53.7-14.5 6-62.2H84.3L71.5 112.2h241.1l-4.4 47.7z"></path></svg></span></a><a title="Mastodont" target="_self" href="https://cybre.space/@rodneylives" rel="nofollow noopener" class="saboxplugin-icon-grey"><svg aria-hidden="true" class="sab-mastodont" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 417 512"><path fill="currentColor" d="M417.8 179.1c0-97.2-63.7-125.7-63.7-125.7-62.5-28.7-228.5-28.4-290.4 0 0 0-63.7 28.5-63.7 125.7 0 115.7-6.6 259.4 105.6 289.1 40.5 10.7 75.3 13 103.3 11.4 50.8-2.8 79.3-18.1 79.3-18.1l-1.7-36.9s-36.3 11.4-77.1 10.1c-40.4-1.4-83-4.4-89.6-54-.6-4.4-.9-9-.9-13.9 85.6 20.9 158.6 9.1 178.7 6.7 56.1-6.7 105-41.3 111.2-72.9 9.8-49.8 9-121.5 9-121.5zm-75.1 125.2h-46.6V190.1c0-49.7-64-51.6-64 6.9v62.5h-46.3V197c0-58.5-64-56.6-64-6.9v114.2H75.1c0-122.1-5.2-147.9 18.4-175 25.9-28.9 79.8-30.8 103.8 6.1l11.6 19.5 11.6-19.5c24.1-37.1 78.1-34.8 103.8-6.1 23.7 27.3 18.4 53 18.4 175z"></path></svg></span></a></div></div></div>]]></content:encoded>
					
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			</item>
		<item>
		<title>Outrun on the Amiga</title>
		<link>https://setsideb.com/outrun-on-the-amiga/</link>
		
		<dc:creator><![CDATA[rodneylives]]></dc:creator>
		<pubDate>Thu, 13 Nov 2025 15:00:00 +0000</pubDate>
				<category><![CDATA[niche]]></category>
		<category><![CDATA[retro]]></category>
		<category><![CDATA[AGA]]></category>
		<category><![CDATA[amiga]]></category>
		<category><![CDATA[Outrun]]></category>
		<category><![CDATA[port]]></category>
		<category><![CDATA[reassembler]]></category>
		<guid isPermaLink="false">https://setsideb.com/?p=11071</guid>

					<description><![CDATA[The Amiga line of computers from classic Commodore are rightly revered, but they did have their limits. Infamously, the people at id Software claimed that, despite all its custom chips, Wolf3D and Doom weren&#8217;t possible on it, and it&#8217;s true that in the time since no one has managed to make games like those on &#8230; <a href="https://setsideb.com/outrun-on-the-amiga/" class="more-link">Continue reading<span class="screen-reader-text"> "Outrun on the Amiga"</span></a>]]></description>
										<content:encoded><![CDATA[
<p>The Amiga line of computers from classic Commodore are rightly revered, but they did have their limits. Infamously, the people at id Software claimed that, despite all its custom chips, Wolf3D and Doom weren&#8217;t possible on it, and it&#8217;s true that in the time since no one has managed to make games like those on  stock Amiga without some pretty major drawbacks. It&#8217;s been said that the lack of those foundational first-person shooters were really what caused PCs to be seen as gaming machines. From there, the fact that you could use one machine for both work and play arguably paved the way for the Windows hegemony of the current day.</p>



<p>But let&#8217;s not forget that Amigas were quite capable in other ways, and a recent technical feat has demonstrated this: the creation, by someone called reassembler, of <a href="https://reassembler68k.itch.io/outrun-amiga-edition">a nearly arcade-perfect of Sega&#8217;s arcade hit Outrun</a> (itch.io). Outrun was amazing to see in action at the time, and it&#8217;s still pretty awesome to watch today. It used Sega&#8217;s &#8220;Super Scaler&#8221; hardware to push up to 128 huge sprites per frame. The Amiga, by contrast, only has eight hardware sprites, and they&#8217;re not that different from those on Commodore&#8217;s 8-bit computers really. Where the Amiga excelled was using its <em>blitter</em>, a way to rapidly modify memory using custom circuitry, to simulate sprites.</p>



<p>Here&#8217;s <a href="https://www.youtube.com/watch?v=WZzTp3vSC0g">a release trailer showing off reassembler&#8217;s port</a> (one minute long):</p>



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe title="OUTRUN: Amiga Edition - Release Trailer!" width="840" height="473" src="https://www.youtube.com/embed/WZzTp3vSC0g?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
</div></figure>



<p>Compare that buttery-smooth gameplay to the jerky framerate in <a href="https://www.youtube.com/watch?v=eOGxxYm4z5I">this video of  Probe Software&#8217;s official port from 1987</a> (13½ minutes):</p>



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe loading="lazy" title="Amiga Longplay Out Run" width="840" height="630" src="https://www.youtube.com/embed/eOGxxYm4z5I?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
</div></figure>



<p>Let&#8217;s not be too harsh on Probe&#8217;s port, as it was written for earlier Amigas. The new port requires the AGA graphics set and a 68030 processor, meaning the earliest machine that could run it was the Amiga 4000.</p>



<p>reassembler has made a video explaining the optimizations he made to get the game running so smoothly. (16½ minuites) I eat this kind of thing up. Here&#8217;s hoping it&#8217;ll be a filling meal for you too!</p>



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe loading="lazy" title="How Did I Get OUTRUN&#039;s Sprite Scaling Working On An AMIGA?!" width="840" height="473" src="https://www.youtube.com/embed/O_QP2qQJuXc?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
</div></figure>



<p> </p>
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