What you always wanted to know about low-level BIOS hacking

... but were afraid to ask.

Could be good name of a fictitious, forthcoming low level BIOS modding book. But the picture on the right here ( click for a slightly larger version ) should be able to summarize what it takes to byte(bit?)patch a routine that got compiled together with the 1B main BIOS routine. On the percentage scale I'm half way and it took (me) 2 years to get there. The remainder of the !gesa mod lies there in plain view on the table. Try and fit that.

But anyway; replacing Barcelona code with Istanbul machina-ex.