+ /* TBD: clear SS output. */
+ controller->mode = SPI_START_BIT;
+ controller->tx_bit = 7;
+ set_bit_port (me, cpu, M6811_PORTD, (1 << 4), ~controller->clk_pin);
+ }
+ else
+ {
+ /* Change the SPI clock at each event on bit 4 of port D. */
+ controller->clk_pin = ~controller->clk_pin;
+ set_bit_port (me, cpu, M6811_PORTD, (1 << 4), controller->clk_pin);
+ }
+