Hi,
I try to use 2x clock multiplier of the ds89c430, however when I follow the steps, I cant change the clock frequency.
What would you suggest?
My code;

PMR = 0x80;//choose 2x mode
PMR = 0x90;// enable multiplier
while(EXIF != 0x00)
{
// wait warm-up period
}
PMR = 0x10;// set the value of multiplier

http://datasheets.maxim-ic.com/en/ds/DS8...89C450.pdf
page 38