TX39_MEMCONFIG3_PORT8SEL
reg32 |= TX39_MEMCONFIG3_PORT8SEL;
reg32 &= ~TX39_MEMCONFIG3_PORT8SEL;
reg32 & TX39_MEMCONFIG3_PORT8SEL ? 8 : 16));
reg &= ~TX39_MEMCONFIG3_PORT8SEL;
reg |= TX39_MEMCONFIG3_PORT8SEL;