BBC micro compatible - SIO. By Lee Davison. Back
This card provides four extra serial ports for the Cube. The board contains the following... 4 x R6551AP ACIA 4 x AM26LS30PC 2 x AM26LS32PC R6522AP VIA Misc 74 serise logic.
4 x R6551AP ACIA 4 x AM26LS30PC 2 x AM26LS32PC R6522AP VIA Misc 74 serise logic.