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		<title>QuantumHeat.org</title>
		<description>Discuss QuantumHeat.org</description>
		<link>http://www.quantumheat.org</link>
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			<title>Stephen Lawrence says:</title>
			<link>http://www.quantumheat.org#comment-20787</link>
			<description><![CDATA[Is this project still active? Did you manage to work out the program of the 8031? I was always interested in getting one of these Brown's Gas generators from Eagle Research, but...]]></description>
			<dc:creator>Stephen Lawrence</dc:creator>
			<pubDate>Wed, 16 Oct 2024 20:16:29 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-20787</guid>
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			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9928</link>
			<description><![CDATA[Glad to hear the progress SysEngineer.]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Sun, 22 Mar 2020 21:56:06 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9928</guid>
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		<item>
			<title>Robert Greenyer says:</title>
			<link>http://www.quantumheat.org#comment-9926</link>
			<description><![CDATA[Several updates to live document.]]></description>
			<dc:creator>Robert Greenyer</dc:creator>
			<pubDate>Sun, 22 Mar 2020 17:38:11 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9926</guid>
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			<title>Robert Greenyer says:</title>
			<link>http://www.quantumheat.org#comment-9887</link>
			<description><![CDATA[GlobalBEM 2013 Conference Presentation by Moray B. King https://youtu.be/GhZ1reCoyrY]]></description>
			<dc:creator>Robert Greenyer</dc:creator>
			<pubDate>Mon, 16 Mar 2020 12:42:09 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9887</guid>
		</item>
		<item>
			<title>Robert Greenyer says:</title>
			<link>http://www.quantumheat.org#comment-9830</link>
			<description><![CDATA[Hi John, May be worth acquiring the spare panel, thanks for finding that.]]></description>
			<dc:creator>Robert Greenyer</dc:creator>
			<pubDate>Fri, 06 Mar 2020 22:03:07 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9830</guid>
		</item>
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			<title>Stevenson says:</title>
			<link>http://www.quantumheat.org#comment-9826</link>
			<description><![CDATA[The CPU board is a relatively simple 2 layers PCB with very straight traces, so it would not be too difficult to derive the schematic: this would simplify a lot the work and will give some clues for understanding the code. To this end it would suffice a good quality high resolution picture of both sides of the board. My guess is that the program control loop runs on polling for most of the external resources, due to non critical timings, and perhaps employs the external interrupt for the ADC only. If we can get the schematic we can figure out the peripheral addresses and so link the code to its activity and purpose. Without the schematic this task is quite hard, IMO.]]></description>
			<dc:creator>Stevenson</dc:creator>
			<pubDate>Fri, 06 Mar 2020 18:24:44 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9826</guid>
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		<item>
			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9825</link>
			<description><![CDATA[Not to be critical... Just painful experience as reference. Cheers]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 17:07:57 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9825</guid>
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			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9824</link>
			<description><![CDATA[ Ok. So speculation just slows us down until we can get a good schematic down. Current is key measure, you have to have the overall picture before understanding and interpreting the details.]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 17:02:30 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9824</guid>
		</item>
		<item>
			<title>Mats002 says:</title>
			<link>http://www.quantumheat.org#comment-9823</link>
			<description><![CDATA[Ok, so we have a measure of electrolyzer current going into the ADC going to the microprocessor as 8 bit(?) resolution. What can output be? A control signal to the DC electrolyzer? DA conversion can be constructed very simple, no need for a chip.]]></description>
			<dc:creator>Mats002</dc:creator>
			<pubDate>Fri, 06 Mar 2020 16:13:27 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9823</guid>
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		<item>
			<title>SYsEngineer says:</title>
			<link>http://www.quantumheat.org#comment-9822</link>
			<description><![CDATA[Thanks for the LS28 note -- for some reason, I was not able to find it is a 74LS family list. The ADC is an 8-channel ADC. I know that the panel board gets the current (voltage across a shunt) and voltage signals from the heavy current electrolyzer. However, they are both directly displayed by a meter chip tied to the panel displays. So far, just the current signal (conditioned by op-amps) goes to the ADC. The voltage signal seems to be ignored.]]></description>
			<dc:creator>SYsEngineer</dc:creator>
			<pubDate>Fri, 06 Mar 2020 15:34:23 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9822</guid>
		</item>
		<item>
			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9821</link>
			<description><![CDATA[ There is and ADC on the board.]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 15:30:05 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9821</guid>
		</item>
		<item>
			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9820</link>
			<description><![CDATA[I have sent photos to Greenyer till I can figure out how to post pics here.]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 15:28:44 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9820</guid>
		</item>
		<item>
			<title>Mats002 says:</title>
			<link>http://www.quantumheat.org#comment-9819</link>
			<description><![CDATA[Is there any trace of A/D and D/A conversion? The logic kan be a signal processor. If so there is little code and lots of data in the EPROM.]]></description>
			<dc:creator>Mats002</dc:creator>
			<pubDate>Fri, 06 Mar 2020 15:27:24 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9819</guid>
		</item>
		<item>
			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9815</link>
			<description><![CDATA[The 74LS28 is a quad 2 input positive NOR bufers. Can send phoro of document on the part. How?]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 15:15:37 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9815</guid>
		</item>
		<item>
			<title>SYsEngineer says:</title>
			<link>http://www.quantumheat.org#comment-9814</link>
			<description><![CDATA[There is a chip on the board labeled 74LS 28 with a symbol that is not a common manufacturer. It is somehow involved in the address decoding -- I have no idea what s is. The closest chip I have found is a LS280 -- parity tree. Anyone have any idea what it is?]]></description>
			<dc:creator>SYsEngineer</dc:creator>
			<pubDate>Fri, 06 Mar 2020 14:34:20 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9814</guid>
		</item>
		<item>
			<title>SYsEngineer says:</title>
			<link>http://www.quantumheat.org#comment-9813</link>
			<description><![CDATA[I based the idea that there is only one interrupt on the decoded assembly listing. It is now apparent that I need to trace the board more thoroughly to verify that. It also seems to use memory-mapped IO (based on addresses that I se dis-assembled). I have now powered up the system and get some activity, but except for reset, do not see any response to pushbuttons on the panel.]]></description>
			<dc:creator>SYsEngineer</dc:creator>
			<pubDate>Fri, 06 Mar 2020 14:13:44 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9813</guid>
		</item>
		<item>
			<title>Robert Greenyer says:</title>
			<link>http://www.quantumheat.org#comment-9812</link>
			<description><![CDATA[Hi David, Well, people were only directed here last night. I will ask the systems engineer to communicate here. Files can be uploaded here as needed.]]></description>
			<dc:creator>Robert Greenyer</dc:creator>
			<pubDate>Fri, 06 Mar 2020 13:23:12 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9812</guid>
		</item>
		<item>
			<title>David W. Davis says:</title>
			<link>http://www.quantumheat.org#comment-9811</link>
			<description><![CDATA[I don't see any comments here yet. I saw some of the developer's video on Radare, yes steep learning curve. Saw mention of only a single interrupt. This indicates to me the developer established his own external interrupt architecture. There will be some logic to capture which event occurred and some value associated with it. When the circuit is chased down to some level of a schematic, let me know if you need help deciphering the logic. I designed a number of systems using TTL logic back in that era.]]></description>
			<dc:creator>David W. Davis</dc:creator>
			<pubDate>Fri, 06 Mar 2020 12:01:50 +0000</pubDate>
			<guid>http://www.quantumheat.org#comment-9811</guid>
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