The 1-Wire port is based around a DS2482-800 &DS2482-100 I2C to 1-Wire bridge device.

The DS2482-800 provides bi-directional protocol conversion between the I2C port on the Raspberry Pi

and any attached 1-Wire® slave devices. An ESD Protection Diode is

used to protect the Board and Raspberry Pi from electrostatic spikes on the 1-Wire port.

Connections to the 1-Wire port can be made through pin on the PCB.

1-Wire 2482-100 1 channelWITH 1 ESD protection diodeDS2482-100Datasheet

1 Wir 2482-800 8 channel with 8ESD protection diodeDS2482-800Datasheet

with DS18B20Temperature Sensor

18 -- > DS2482-100 1c --> DS2482-800& 68 --> DS1307 RTC

It appears that OWServer has found 9 1-wire busses,
DS2482-100is bus.0DS2482-800is bus.1 .. bus 8