Is the Quadra 610 Quaddoubler supposed to work in an LC475?

[d3jsp]

Does anyone know if the 605/610 quaddoubler will work in an LC475? Tried it on mine but it will not chime or boot. I thought the architecture of an LC475 is identical to the Quadra 605

 

[Phipli]

Does anyone know if the 605/610 quaddoubler will work in an LC475? Tried it on mine but it will not chime or boot. I thought the architecture of an LC475 is identical to the Quadra 605

Yeah, it should work. The only difference is that the memory performance is a tiny bit better on the 605, but that wouldn't impact your upgrade. If you want to be absolutely sure, remove the little jumper next to the hard disk power connector on the logicboard and your 605 becomes a 475.

One question - is your 605 overclocked?

Edit - sorry, I see you have a 475. I got muddled. Same thing, just add the jumper to turn a 475 into a 605.

 

[d3jsp]

It's not overclocked, just a stock LC 475 but won't boot with a quaddoubler. It does say 610-U1 on the gal chip though

 

[Phipli]

It's not overclocked, just a stock LC 475 but won't boot with a quaddoubler. It does say 610-U1 on the gal chip though

To be clear, a 610 is much more different. But should probably still work.

 

[d3jsp]

is that J18? There is nothing on J18 for me and still shows up as an LC 475

 

[Phipli]

is that J18? There is nothing on J18 for me and still shows up as an LC 475

Yeah, I got muddled and thought you had a 605. Add a jumper to become a 605.

 

[d3jsp]

Ahh got it! Unfortunately it still will not chime with the pin and showing up as a Quadra 605 with the original 25 MHZ CPU. I guess maybe the 68040 on the quaddoubler is dead? Can I replace it with another 68040 or LC040 chip?

 

[Phipli]

Ahh got it! Unfortunately it still will not chime with the pin and showing up as a Quadra 605 with the original 25 MHZ CPU. I guess maybe the 68040 on the quaddoubler is dead? Can I replace it with another 68040 or LC040 chip?

You could swap the QuadDoubler's CPU into the LC's socket? To test it that is.