Port from stella: add a one cycle delay to ENABL, fixes Super Challenge Football.
Port from stella: add a one cycle delay to ENABL, fixes Super Challenge Football.

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