Can't certify the precision of the ADC, but the sky was a lot darker and the earth a lot rounder than I ever saw in a Tornado F3!
And talking of exceeding limits (in the same retro gung ho attitude), I used to fight the Tornado F3 in Mach in the HUD as it was always the limit for wing sweep and you couldn't have both IAS and mach displayed at the same time. During a bug out in Deci at base height at very high mach and with the wings fully back, I switched to IAS. I had to go back to mach as the IAS was 75 kts over the VNO.
I also had to bug out at Deci for fuel aganst an Italian F-104, and I was in the F3 (Tornado, not Lightning). It's amazing what you can do when you set your mind to burning HM's fuel as fast as possible.