Ok, we'll go the easy way then.

Assuming you're not using the alarms ...
Code:
DS18B20_9bit  CON %00011111 ; 93.75ms, 0.5°C
DS18B20_10bit CON %00111111 ; 187.5ms, 0.25°C  <-- My favorite
DS18B20_11bit CON %01011111 ; 375ms,   0.125°C
DS18B20_12bit CON %01111111 ; 750ms,   0.0625°C  (default)

OWOUT DQ, 1, [$CC, $4E, 0, 0, DS18B20_10bit]
HTH,