CALIBRATE_LATCH 35 arch/x86/include/asm/mach_timer.h outb_p(CALIBRATE_LATCH & 0xff, 0x42); /* LSB of count */ CALIBRATE_LATCH 36 arch/x86/include/asm/mach_timer.h outb_p(CALIBRATE_LATCH >> 8, 0x42); /* MSB of count */