Changes
/* Usage in CPC */
== Usage in CPC ==
Used by [[CPCI_RS232_Interface|CPCI]] (DIY german magazine CPC Schneider International):
F8DCh CPCI Serial Interface MC6850 Control/Status Register (R/W)
IRQ pin is not connected (can be read only by software, in Status.Bit7)
Used by [[KDS_Electronics_Serial_InterfaceKDS Electronics Serial Interface]]:
FBECh KDS RS232 6850 (reversed-bit-order) Control (W)
Caution: KDS has wired the 6850 chip's data bus incorrectly: D7 is D0,
D6 is D1, etc. (so the bit order must be reversed by software).
Input CLK is 2MHz with variable 16bit divider (programmable [[8253 chip]])
Used by [[AMSSIO]] (DIY by Martin Zacho):
