<div dir="ltr">Thanks for the tip. <div><br></div><div>BTW, I'm finding it impossible to mount a FAT pcmcia storage device. I can see it detected, there's a device for it in /dev/dsk, I can dd that device and get the FAT header, but it won't mount with -F pcfs or any other combinations of partitions/etc that I can think of. Nothing on the internet, any advice?</div><div><br></div><div>Thanks again,</div><div>Dan.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, Nov 9, 2025 at 1:59\u202fAM Romain Dolbeau <<a href="mailto:romain@dolbeau.org">romain@dolbeau.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Le dim. 9 nov. 2025 à 10:10, Dan Moisa <<a href="mailto:dmoisa@gmail.com" target="_blank">dmoisa@gmail.com</a>> a écrit :<br>
> I also noticed that the CPU itself is labeled -70, but reported by the system to be running at 60Mhz<br>
<br>
Yep, that's just a speed rating. If it's running at 60 MHz then it's<br>
likely the SBus part is running at 20 MHz, and might not be rated for<br>
higher.<br>
At best, I wouldn't try more than 80 MHz with a -85 and 100 MHz with a<br>
-110 (20*4, 20*5).<br>
<br>
> Romain you're likely right that a drop-in might not work out of the box unless the clock multiplication is entirely internal<br>
<br>
IIRC, it runs at whatever clock is fed to it, then divides that by 3,<br>
4 or 5 to generate the bus/system clock using DIV_CNTL, hence the need<br>
to replace the oscillator/crystal/... that produces the CPU clock.<br>
<br>
Cordially,<br>
<br>
-- <br>
Romain Dolbeau<br>
</blockquote></div>