Flush cache on vblank -> fixes garbage lines in catharsis theory and river raid.
Flush cache on vblank -> fixes garbage lines in catharsis theory and river raid.

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