Hi guys, I have this 386 SX 16MHz Philips motherboard:
https://theretroweb.com/motherboards/s/philip … -5107-200-30042

It has no chassis connectors whatsoever. And I want to expose some LEDs out of it. Power and HDD are easy. The mobo can do Turbo switching (16MHz vs 8MHz) either via BIOS Setup, or via key-combinations during any time of operation, or even a SPEED.COM program that comes on the setup disk.

I wonder if it's possible to find a line on the mobo that can be used to tell whether Turbo mode is active or not. I can see three crystals on the board: 32MHz, 16MHz and a 9.6MHz. Wondering if those are selectively used between Turbo and non-turbo.

Any ideas or guidance on what to look for or where to trace from?

Cheers!