Changes
/* Usage in CPC interfaces */
F4X0h Aleste PPI Port A, Baudrate Timer 0 (RX Clock) (W)
F4X1h Aleste PPI Port A, Baudrate Timer 1 (TX Clock) (W)
F4X2h Aleste PPI Port A, Baudrate ColorSet Timer 2 (FUTURE) (W)
F4X3h Aleste PPI Port A, Timer 0-2 Control Registers (W)
Clock Input for RX/TX is 4MHz, Clock output goes to a 8251 chip,
