I'm utterly baffled that this worked. Ignoring an entire border of pins? Voltage levels from the chipset? Bios recognition? IO timing diagrams?
I kinda don't believe this, but I'm too lazy to look up old datasheets.
I kinda don't believe this, but I'm too lazy to look up old datasheets.
Uh... sure, if you say so.
Though, given how it might be using low power (and maybe with some overdrive adaptor quirk), it might have worked this time
> Voltage levels from the chipset?
Wasn't it just 3.3V at the time (or maybe even 5V)?
> Bios recognition?
Not necessarily? Software-wise, a Pentium is still compatible with a 486, and 486s did not even have CPUID yet (only some later steppings did). The BIOS might have not set some bits in some of the control registers as it would otherwise do, but that does not prevent the CPU from working...
> IO timing diagrams?
That's the hardest one, but remember that this was not a "true Pentium" but an "Overdrive", which is basically a Pentium with a 486 bus interface. And the board does accept 486s.