RayeR wrote on 2023-11-24, 00:00:
I would bet it's BF2:0 = 1 0 1, so let some owner try to measure it on his laptop. But I'm not sure how valuable this info would be as lower CPUs are already locked. Intel don't give bonus easily as AMD. AFAIK nobody was able to unlock multi on intel there was only some unlocked engineering samples, the same for SMP...
I investigated this quite thoroughly SMP, at the very least appears to not be routed through gold wire on tillamook PPGA and possibly not even present at all on the die. I can’t speak for the film package chips.
So ppga tillamook smp is never going to happen.
Film chip tillamook however…?
Have you noticed any curious pins on the package RayeR?
There are some Intel chips that are claimed to not be working in SMP which I have been able to explain such as the MMX overdrive I am basically 99% sure that they omitted the gold wire for one of the pins which oddly enough only disables its use as a slave CPU, so it can work as a master in SMP and I was able to do this
I am unsure how Intel locked the pentium one CPUs, but I kind of suspect that it was not through gold wire perhaps on-die fuses? I struggle to explain why some CPU examples had their multipliers scrambled. I fear we may never know unless an intel engineer shows up and and enlightens us
A note about the overdrive MMX I believe that they set its multiplier permanently through gold wire, (respective BF pins routed to vss or vcc3 accordingly) I noted that their bf pins are NC but I don’t think they did the same thing on the PPGA CPUs because that doesn’t explain how some of the multipliers got scrambled.
Something rather interesting about tillamook,
I have a bunch of the following ppga tillamooks,
None of them are locked from 133,166,200,233,266 but I have never gotten them to do 300 at 66mhz fsb
I thought I had a 166 but I think I was mistaken, still need that!