The ATARI 850 Interface Module allows communication between your ATARI Personal Computer and RS-232-C peripherals. The ATARI 410 Program Recorder/ disk drive/ ATARI 820 Printer and devices plugged in to a controller jack function without the interface module.

The interface module connects between the computer console and the peripherals. The interface module has four serial ports and one parallel port, which is referred to as the Printer Port. The interface module contains a processor and memory and programmable ports. The programming of the interface module is controlled from the ATARI Personal Computer System.

ATARI 825 Printer

The ATARI 825 Printer is an 80-column medium-speed Printer. It is much more versatile that the ATARI 820 Printer. The 825 Printer requires an ATARI 850 Interface Module that is used in conjunction with it.

The 825 Printer connects to the Printer Port of the Interface Module.

ATARI 830 Modem

The ATARI 830 Modem is a Beil 103-compatible modem that enables you to communicate over the switched telephone network with another terminal equipped with a similiar modem. The ATARI 830 Modem requires an ATARI 850 Interface Module that is used in conjunction with it.

The modem usually connects to port 1 of the interface module. The modem, under the control of the interface module, produces tones that are sent out as electrical signals over the telephone lines. Messages are received by the modem as tones that it decodes and sends to the interface module. The incoming/ out going traffic is managed according to the programmed functions of the interface module. The technical specifications of the Modem are given in APPENDIX 13.