<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hi<div><br></div><div>Correct, only OBP 4.x cannot be reprogrammed. This is a small number of systems as most have 3.x. </div><div><br></div><div>On the NVRAM, suggest you buy a new M48T58 which should still be available from distis </div><div><br></div><div>Peter<br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On 29 Oct 2024, at 08:50, Ethan Hawke via rescue <rescue@sunhelp.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>
</p><blockquote type="cite">Ultra-based NVRAM cannot be recoded from
the ok prompt. <br>
</blockquote>
<p></p>
<p>Some Ultra-based NVRAMs can be reprogrammed, including the Ultra
2 (Ultra's running OBP 3 will work).</p>
<p>
</p><blockquote type="cite">But unusually this failed to work. I'm
pretty sure the soldering etc is OK, and I actually removed the
old battery from the chip so there is no short from that.</blockquote>
Does the chip not work at all or just not remember it's settings?
You can use 'watch-clock' at the OBP ok prompt to see if the chip
is working.<p></p>
<p>Ethan<br>
</p>
<div class="moz-cite-prefix">On 29/10/2024 7:08 pm, Jonathan Katz
via rescue wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAEOZr+1ZGKU-x-V21ESi7_ZWRVdZRz3esbD+LK362cqMLVeD4A@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Ultra-based NVRAM cannot be recoded from the ok
prompt. <br clear="all">
<br clear="all">
<div>
<div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">-Jon<br>
+44 7792 149029</div>
</div>
</div>
<div><br>
</div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, 29 Oct 2024 at
07:56, silcreval via rescue <<a href="mailto:rescue@sunhelp.org" moz-do-not-send="true" class="moz-txt-link-freetext">rescue@sunhelp.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">I've
started restoring an Ultra 2 which I've had on the shelf for
a long time. <br>
<br>
These are nice machines, and sort of a bridge between the
older pizza box Sun's and the later Ultra 10/30/60/80. They
still come with SBUS slots, but have a UPA slot for a
graphics card, usually a Creator3D.<br>
<br>
They seem to take up to 2G of RAM. Mine has a single CPU and
256M of RAM by the looks of things (4 x 64). There are dual
HD which are 4G each.<br>
<br>
Mine seems to work fine and even boots to my surprise.
However the NVRAM is of course dead as a dodo.<br>
<br>
Now I've done the usual dremel job on the NVRAM, fitted a
battery and then reset and re-entered the NVRAM values using
MKP on the boot prompt.<br>
<br>
But unusually this failed to work. I'm pretty sure the
soldering etc is OK, and I actually removed the old battery
from the chip so there is no short from that.<br>
<br>
As this is not the usual M48T02 chip, it is instead a
M48T59Y, I'm wondering if I'm missing something with the
reset, or if the chip is just literally dead at this point?<br>
<br>
Thanks as ever for the help<br>
<br>
- Ian<br>
_______________________________________________<br>
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</blockquote>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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</blockquote>
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