Changes
/* Usage in CPC interfaces */
== Usage in CPC interfaces ==
=== Amstrad Serial Interface ===
Used by standard [[Amstrad Serial Interface]] (and compatible) RS232 interfaces, mapped to Ports:
FBDCh Amstrad RS323 8253 Baudrate Timer 0 Channel A TX Clock (R/W)
Clock Output may be further divided by 1, 16, 32, or 64 in the DART chip
=== KDS Serial Interface ===
Also used by [[KDS_Electronics_Serial_Interface|KDS Serial Interface]], mapped to other Ports, and RX/TX exchanged:
FBE8h KDS RS232 8253 Baudrate Timer 0 (RX Clock) (R/W)
Clock Output may be further divided by 1, 16, or 64 in the 6850 chip
=== Aleste 520EX Serial Interface and Color Palette Swap ===
Also used by [[Aleste 520EX]] CPC clone:
F4X0h Aleste PPI Port A, 8253 Baudrate Timer 0 (RX Clock) (W)
PPI Port A data direction must be output,
Aleste ExtReg must enable access to 8253, and disable access to PSG
Note: According to the Aleste schematic, clock input is 4MHZ (16MHZ/4),
not sure if that is correct (?) theoretically the 8253 supports
only max 2.6MHZ, and anything faster requires 8254, not 8253.
=== Magic Sound Board for Aleste 520EX ===
== Timer Registers ==
