Configuration Table Use ======================= sDeviceName The name of this device. deviceType This field must be SERIAL_MC68681. pDeviceFns The device interface control table. This may be: + mc68681_fns for interrupt driven IO + mc68681_fns_polled for polled IO deviceProbe This is the address of the routine which probes to see if the device is present. pDeviceFlow This field is ignored as hardware flow control is not currently supported. ulMargin This is currently unused. ulHysteresis This is currently unused. pDeviceParams This is set to the default settings. ulCtrlPort1 This field is the base address of the entire DUART. ulCtrlPort2 This field is the base address of the port specific registers. ulDataPort This field is bit mapped as follows: bit 0: baud rate set a or b bit 1-2: BRG selection ("Select Extend bit") Note: If both ports on single DUART are not configured for the same baud rate set, then unexpected results will occur. Note: On the Exar 88c681, if a standard clock of 3.6864 Mhz is used and the "Select Extend bit" is 0 (disabled), then the default MC68681 baud rate table is selected. getRegister setRegister These follow standard conventions. getData setData These are unused since the TX and RX data registers can be accessed as regular registers. ulClock This is a pointer to a baud rate mapping table. If set to mc68681_baud_rate_table, then the CSR/ACR/X bit mappings shown in the 68681 and 88681 manuals are used. Otherwise, the board specific baud rate mapping is used. NULL is not a valid value. ulIntVector This is the interrupt vector number associated with this chip.