Also used by Aleste 520EX CPC clone:
F4X0h Aleste_PPIPortA_PsgPortAAleste PPI Port A, Baudrate Timer 0 (RX Clock) (W) F4X1h Aleste_PPIPortA_PsgPortAAleste PPI Port A, Baudrate Timer 1 (TX Clock) (W) F4X2h Aleste_PPIPortA_PsgPortAAleste PPI Port A, Baudrate Timer 2 (FUTURE) (W) F4X3h Aleste_PPIPortA_PsgPortAAleste PPI Port A, Timer 0-2 Control Registers (W)
Clock Input for RX/TX is 4MHz, Clock output goes to a 8251 chip,
Clock Input for FUTURE is HSYNC, Clock output selects 1st/2nd color set,