bad news!
Hey everyone! Sorry for the long time since I last posted, but I found some interesting things.
First, modding the m6805 BIOS seems impossible now since there are parts of the BIOS code that are compressed, and only uncompress when the BIOS actually runs. Without the full Phoenix BIOS editor program, I can't make changes to the compressed code.
Second, using the Gateway 7422GX BIOS in an eMachines doesn't work well as I said before and as others are discovering. Modding this Gateway BIOS to work with the eMachines seems impossible for the same reason as modding the eMachines BIOS.
Third, researching more about the Turion, there's really no benefit for putting it into an eMachines, since the chipset will still draw the same amount of power (the battery time will not increase). Although it would allow us to upgrade to a slightly faster CPU, it's probably not worth to buy a Turion when you can buy a laptop with one already in it.
Because of all this, I picked up two Gateway 7510GX laptops, new but open box with damaged screens, fixed their screens, and sold my two m6805 laptops and Turion chip. It was too good of a deal, as the result was upgrading for free.
So I'm sorry to say, my m6805 BIOS modding days are over. But if someone wants to continue, send me a message and I can send you what technical info I found, although it won't do much good unless you have the Phoenix BIOS editor.