Fix rogue FE bank switch during boot.
Fix rogue FE bank switch during boot.

6502ts/6502.ts,6502ts/6502.ts,6502ts/6502.ts,6502ts/6502.ts,DirtyHairy/6502.ts,DirtyHairy/6502.ts,DirtyHairy/6502.ts,DirtyHairy/6502.ts,6502ts/6502.ts