ACIA Select 256b
The Status, Control, TX, and RX registers of a Motorola MC6850 or Hitachi HD6350 Asynchronous Communication Interface Adapter (ACIA) are mapped into this 256 byte page.
The ACIA has 4 registers accessible through 2 memory mapped input/output (MMIO) addresses.
A read from $EB00 will return the content of the ACIA Status register.
A write to $EB00 will update the ACIA Control register with new configuration.
A read from $EB01 will return received byte from the ACIA RX Data register.
A write to $EB01 will update the ACIA TX Data register with a new byte to transmit.
Return to SST-6809