ocr: The cassette Fort and the Commodore serial bus Port are 7501 and implimented using usinig software the control zero of Fase ports hardware available handshake, on the The serial bus works with Commodore serial components) excert for older Periperals that have a handshake timins problem. The User Port is intended for external RS-232 adaptersi and modem adarters. Transmissicn and reception is accomplished usins 3 6551 ACIA with handshakins assistance from a 6529 single port I.C. The Joystick parts are functionally compatible with the standerd Commodore 5 switch type Joystick. They are not compat ...
