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<div dir="ltr" data-setdir="false">I'll write up a post on VCF forums eventually, but I got around to testing this. I have a PicoPSU with the appropriate outputs and re-pinned a $5 ATX-AT adapter. Once I tied Pin 1 to 5v, the system started right up. <br></div><div dir="ltr" data-setdir="false">I'll try wiring it to the ATX power good signals once I get back from vacation and 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 dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Saturday, June 7, 2025 at 10:12:22 AM CDT, Maciej W. Rozycki via rescue <rescue@sunhelp.org> wrote:
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<div><div dir="ltr">On Fri, 6 Jun 2025, Mouse via rescue wrote:<br clear="none"><br clear="none">> > 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">> <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"> The description implies START_PWR_DOWN_L is an input to the motherboard <br clear="none">while POWER_ON_L is an input to the PSU. So you should be able to leave <br clear="none">POWER_ON_L unconnected while driving START_PWR_DOWN_L high at whatever <br clear="none">logic voltage level is used there for the system to operate normally.<br clear="none"><br clear="none"> No experience with said system here, it's just what I infer from the doc.<br clear="none"><br clear="none"> Maciej<div class="ydpe1b2725eyqt6280191756" id="ydpe1b2725eyqtfd94428"><br clear="none"><br clear="none">_______________________________________________<br clear="none">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></div></div>
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