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<div dir="ltr" data-setdir="false">I have a picopsu coming tomorrow for the exact purpose of bringing up a 712/60 motherboard. I hope to have time to try it out in the next couple days and I'll report back. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">mike</div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Friday, June 6, 2025 at 03:31:02 PM CDT, Mike Spooner via rescue <rescue@sunhelp.org> wrote:
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<div><div id="ydp5721f840yiv2423291019"><div><div>Re: 5.1V - it makes all the difference on a different system - the SPARCstation-10. Mind you, the cable harness for *that* is made of aluminium wire, so high-resistance.<br clear="none"></div><br clear="none"><br clear="none"><div class="ydp5721f840yiv2423291019gmail_quote"><div id="ydp5721f840yiv2423291019yqtfd83569" class="ydp5721f840yiv2423291019yqt5732233565"><div>On 6 June 2025 18:46:57 BST, Mouse via rescue <rescue@sunhelp.org> wrote:</div><blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex;" class="ydp5721f840yiv2423291019gmail_quote">
<pre class="ydp5721f840yiv2423291019k9mail"></pre><blockquote style="margin:0pt 0pt 1ex 0.8ex;border-left:1px solid #729fcf;padding-left:1ex;" class="ydp5721f840yiv2423291019gmail_quote"><div>I presume this is the manual you already found: =<br clear="none"><a shape="rect" href="http://ftp.parisc-linux.org/docs/platforms/712_technical_manual.pdf," rel="nofollow" target="_blank">http://ftp.parisc-linux.org/docs/platforms/712_technical_manual.pdf,</a><br clear="none"></div></blockquote><div><br clear="none">I found it on manualslib.com, but, except for manualslib's obnoxious<br clear="none">UI and the line they add to the bottom of each page, it looks the same<br clear="none">(I side-by-side skimmed the first half-dozen pages).<br clear="none"><br clear="none"></div><blockquote style="margin:0pt 0pt 1ex 0.8ex;border-left:1px solid #729fcf;padding-left:1ex;" class="ydp5721f840yiv2423291019gmail_quote"><div>the =<br clear="none">power supply stuff is in 7-1, also a small bit about the =<br clear="none">START_PWR_DOWN_L signal.<br clear="none"></div></blockquote><div><br clear="none">I saw that. I may experiment if I can't find anything more definitive.<br clear="none">As long as the board is happy with nothing driving either pin, I should<br clear="none">be OK. If it doesn't work, I'll try pulling the pins to various<br clear="none">voltages with 1K or so resistors....<br clear="none"><br clear="none">Not that that's going to happen soon.<br clear="none"><br clear="none">Actually, looking at table 7-1 now, I see that it says the main +5 is<br clear="none">actually supposed to be +5.1V, though I am inclined to doubt the<br clear="none">difference matters.<br clear="none"><br clear="none">Page 7-2 says that a flashing light on the front panel indicates "a<br clear="none">problem with your graphics subsystem". You've actually got a machine<br clear="none">to look at; can you tell whether that LED is driven by the power<br clear="none">supply, as implied by the PDF's "on the power supply" implies, or by<br clear="none">the board? If the former, there must be some more complex protocol<br clear="none">than just a logic level between board and power supply....<br clear="none"><br clear="none"></div><blockquote style="margin:0pt 0pt 1ex 0.8ex;border-left:1px solid #729fcf;padding-left:1ex;" class="ydp5721f840yiv2423291019gmail_quote"><div>The wire colours described match what I have in my 712/60 (the<br clear="none">motherboard is A2263-66510)<br clear="none"></div></blockquote><div><br clear="none">That's reassuring.<br clear="none"><br clear="none"></div><blockquote style="margin:0pt 0pt 1ex 0.8ex;border-left:1px solid #729fcf;padding-left:1ex;" class="ydp5721f840yiv2423291019gmail_quote"><div>pin one/white wire is closest to the SCSI connector.<br clear="none"></div></blockquote><div><br clear="none">That matches the pin numbers silkscreened onto the board I have (there<br clear="none">there are numbers 1, 5, and 10 next to those three pins, the same on<br clear="none">each side).<br clear="none"><br clear="none">/~\ The ASCII Mouse<br clear="none">\ / Ribbon Campaign<br clear="none"> X Against HTML mouse@rodents-montreal.org<br clear="none">/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B<hr>rescue list - <a shape="rect" href="http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org" rel="nofollow" target="_blank">http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org</a><br clear="none"></div></blockquote></div></div></div></div>_______________________________________________<br>rescue list - <a href="http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org" rel="nofollow" target="_blank">http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org</a><br></div>
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