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Sonnet Quaddoubler project
- Thread starter italux
- Start date
Wow, I just found this thread and am excited for the possibility!
I had looked into getting a Quadra or Centris 610 for playing around with A/UX and now finally got one. When I found out about the CPU upgrade I was intrigued and my searching led me to here. Is there still interest/progress in re-creating this CPU upgrade? I imagine that 68k chips are getting harder and harder to come by...
I had looked into getting a Quadra or Centris 610 for playing around with A/UX and now finally got one. When I found out about the CPU upgrade I was intrigued and my searching led me to here. Is there still interest/progress in re-creating this CPU upgrade? I imagine that 68k chips are getting harder and harder to come by...
Did this project ever get anywhere? I've been hunting for one of these. Really wish I could take advantage of the full 68040 I put in my Centris 610 instead of being stuck at 20MHz.
You should be able to get to at least 28MHz with just a clock swap. Speak to @mg.man, who is in the process of doing this mod.
I would but pushing the clock higher on the Centris board breaks the on board Ethernet which I really want to be able to use under A/UX. If A/UX wasn't so picky about hardware compatibility I would just try using an add on Ethernet adapter.
The link I shared shows how to fix that.
Oh awesome! I was on the verge of sleep so I completely missed the link! Woops. Man I feel dumb.
I post while half asleep way too often. But at least it gives me a plausible excuse for my stupid posts when I'm awake.
Chip grade?
Wow! 27MHz and you haven't even put the clock in the socket yet! Awesome!I've only swapped the oscillator so far... but I'll leave this here :
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@mg.man Was there a reason you decided to go for 27MHz? I figured I would try for the maximum 29.5MHz they reported to still have usable serial ports in that link. Oh I also went through my old Mac related bookmarks and found that same page I just forgot about it since whenever I originally started looking into this.
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Only because it was easy/cheap/quik to get a 13.5Mhz oscillator. I've since popped in a 16Mhz one...
...but haven't done extensive testing like serial, floppy, etc. I plan to add a fan / heatsink and do the Quadra + Ethernet mods first. I have successfully booted @ 32Mhz several times...
