Changes
/* Usage in CPC interfaces */
Clock Output may be further divided by 1, 16, or 64 in the 6850 chip
Also used by [[Aleste 520EX ]] CPC clone:
F4X0h Aleste PPI Port A, Baudrate Timer 0 (RX Clock) (W)
F4X1h Aleste PPI Port A, Baudrate Timer 1 (TX Clock) (W)
