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	<title>What&#039;s All This Brouhaha?</title>
	<link>http://whats.all.this.brouhaha.com</link>
	<description>miscellaneous musings and random rantings</description>
	<lastBuildDate>Tue, 31 Jan 2012 16:49:43 +0000</lastBuildDate>
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	<language>en</language>
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		<title>ksim 8080 simulator released</title>
		<description><![CDATA[As part of my RC2012WW project, I ran an 8080 exerciser and other instruction test programs on a Sol20 to better understand the behavior of the 8080&#8242;s flags (which are NOT exactly the same as those of the Z-80), and &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/31/ksim-8080-simulator-released/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/31/ksim-8080-simulator-released/</link>
			</item>
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		<title>Simulation success!</title>
		<description><![CDATA[By writing some additional 8080 test programs, running them on both the Sol-20 and my simulator, and comparing the output, I&#8217;ve found and fixed several bugs in my simulator.  Now the 8080 Exerciser running on the simulator matches all the &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/19/simulation-success/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/19/simulation-success/</link>
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		<title>Sol-20 running reliably, now running debug version of 8080 exerciser</title>
		<description><![CDATA[With a good power supply filter capacitor, the Sol-20 is now running sufficiently reliably that it passed the 8080 Exerciser., generating the expected CRC values. In order to find the bug(s) in the 8080 simulator I wrote last month, I&#8217;ve &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/18/sol-20-running-reliably-now-running-debug-version-of-8080-exerciser/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/18/sol-20-running-reliably-now-running-debug-version-of-8080-exerciser/</link>
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		<title>Sol-20 power supply capacitor failure</title>
		<description><![CDATA[The reason the Sol I&#8217;ve been using is unreliable (mostly in the first 30 seconds after powerup, but sometimes later also) is that C8, a 18000 uF 10V electrolytic filter capacitor for the 5V power supply, has gone high-leakage. It&#8217;s &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/17/sol-20-power-supply-capacitor-failure/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/17/sol-20-power-supply-capacitor-failure/</link>
			</item>
	<item>
		<title>Modified 8080 exerciser to run on &#8220;bare metal&#8221; Sol-20</title>
		<description><![CDATA[Frank Cringle released a GPL&#8217;d Z80 CPU exerciser in 1994, and Ian Bartholomew released modified versions for the 8080 and 8085 in 2009.  Since I don&#8217;t have CP/M running on my Sol-20 yet, I&#8217;ve modified the sources to assemble with &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/16/modified-8080-exerciser-to-run-on-bare-metal-sol-20/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/16/modified-8080-exerciser-to-run-on-bare-metal-sol-20/</link>
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		<title>Sol-20 Personality Modules</title>
		<description><![CDATA[I got a monochrome monitor out of storage, and unsurprisingly, it shows the Sol-20 video much more clearly than the color TV did. I hooked up the serial port of the Sol-20 to a null modem adapter and USB-to-serial adapter &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/15/sol-20-personality-modules/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/15/sol-20-personality-modules/</link>
			</item>
	<item>
		<title>Sol-20 keyboard fixed</title>
		<description><![CDATA[I&#8217;ve now got one of the four keyboards fixed. Actually I probably have mixed parts of one keyboard with another. I&#8217;ll have to make or buy more foam pads for the other three. Two of the keyboards had foam pads &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/14/sol-20-keyboard-fixed/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/14/sol-20-keyboard-fixed/</link>
			</item>
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		<title>Getting Sol-20 computers working</title>
		<description><![CDATA[I&#8217;ve continued work on my KC/CUTS tape decoder program. The decoder works well with clean audio files, but not so well with noisy ones. I&#8217;m not completely convinced that using the Goertzel algorithm has been a good idea; possibly just &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/14/getting-sol-20-computers-working/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/14/getting-sol-20-computers-working/</link>
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		<title>Code to encode and decode Kansas City standard</title>
		<description><![CDATA[As part of my Retrochallenge 2012WW project, I&#8217;m writing a pair of C programs to encode and decode Kansas City standard and Processor Technology CUTS audio cassette formats, as these are the formats supported on the Processor Technology Sol-20.  These &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/02/code-to-encode-and-decode-kansas-city-standard/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/02/code-to-encode-and-decode-kansas-city-standard/</link>
			</item>
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		<title>C programming, the suboptimal way</title>
		<description><![CDATA[Never name a C function read(), unless you&#8217;re trying to replace the system read() function.  Maybe not a problem on Windows, I&#8217;m not sure, but definitely bad news on Unix or Linux. I spent over an hour trying to figure &#8230; <a href="http://whats.all.this.brouhaha.com/2012/01/02/c-programming-the-suboptimal-way/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://whats.all.this.brouhaha.com/2012/01/02/c-programming-the-suboptimal-way/</link>
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