4.1) What are the Atari 820, 822, and 825 Printers?

The following printers were produced by Atari and styled to match the 400/800
computers.

Atari 820 Printer
- Sold by Atari in the USA only
- 40-column dot matrix impact printer
- 5x7 dot matrix
- 40 characters per line, upper & lower case alpha
- Horizontal and vertical alphanumeric characters
- 6507 MPU (MOS Technology MCS6507 or equivalent), C010745
- 6532 PIA (MOS Technology 6532 RAM-I/O-Timer (RIOT) or equivalent), C010750
- 2KiB ROM
- 40 characters per second
- 400/800 OS: Responds to P: and ignores any device number
    XL OS: Responds to P: and P1:
- 2 Atari SIO ports for direct connection to Atari computers
- Included:
   - Atari SIO cable CA14122 (3 ft.)
   - Ribbon
   - Standard Roll Paper (one roll)
   - Atari 820 Printer Operator's Manual C014762 (CO14762)
- Power supply is built-in (plugs directly into the wall, 120V AC, 18W)
   - (There is no 220V/240V version of the 820.)
- Uses Standard Roll Paper/adding machine paper
- Print mechanism: LRC 7000 / Eaton 7000
- Made in ????????
- Industrial design (case): Roy Nishi and Russell W. Farnell
- Sold separately:
   - Atari 820 Printer Paper (Roll Paper) C014062
   - Atari 820 Printer Ribbon C014854
- Technical manuals:
   - Atari 820 40 Column Printer Service Manual
      - FS015893 REV. 1 January, 1980
   - Atari 820 40 Column Printer Field Fervice Manual
      - FD100048 July, 1981 (c)1982

Atari 822 Thermal Printer
- 37 characters per second
- 10 characters per inch (cpi)
- 40 characters per line, upper/lower case and point graphics
- 5x7 dot matrix
- 400/800 OS: Responds to P: and ignores any device number
    XL OS: Responds to P: and P1:
- 2 Atari SIO ports for direct connection to Atari computers
- Included:
   - AC Power Adapter
   - I/O Data Cord
   - One roll of white thermal paper installed
   - Atari 822 Thermal Printer Operator's Manual C015954 (CO15954)
- Power: Used with an external 9 volt AC transformer power supply rated for at
  least 18 watts: Atari CA014748 or equivalent
- Print mechanism: Trendcom 100
- Made in USA by Trendcom for Atari
- Sold separately:
   - Atari 822 Thermal Printer Paper (2 rolls) C016345

Atari 825 80-Column Printer
- Sold by Atari in the USA only
- Dot matrix impact printer
- 3 character sets:
    monospaced 7x8 dot matrix at 10 cpi (default)
    monospaced condensed at 16.7 cpi
    proportionately spaced Nx9 dot matrix at avg of 14 cpi (N=6..18)
- Each character set with 96 standard ASCII characters
- All characters can be elongated (printer double width)
- Characters per line: 80 at 10 cpi; 132 at 16.7 cpi
- Speed: 50 cps at 10 cpi; 83 cps at 16.7 cpi; 79 cps avg. proportional
- Print buffer: 1200 dot columns
- Controls along bottom of front of printer, left to right:
   - Online/Local
   - Paper  Rev<->Fwd
   - Power Off On
- Paper: roll, fanfold, or cut sheets
- Connectivity: 40 pin PCB edge.  Pinout:
  40                                                        2
   -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
   -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
  39                                                        1
       1. Data Strobe                   2. Ground
       3. Data Bit 1                    4. Ground
       5. Data Bit 2                    6. Ground
       7. Data Bit 3                    8. Ground
       9. Data Bit 4                   10. Ground
      11. Data Bit 5                   12. Ground
      13. Data Bit 6                   14. Ground
      15. Data Bit 7                   16. Ground
      17. Data Bit 8                   18. Ground
      19. Acknowledge                  20. Ground
      21. Busy                         22. Ground
      23. Always Logic 0 (Ground)      24. Ground
      25. On-Line                      26. Not Used
      27. Signal Ground                28. Always Logic 1
      29. Not Used                     30. Ground
      31. Signal Ground                32. +-+ Pin 32 connected to
      33. Chassis Ground               34. +-+ Pin 34 in Printer
      35. +5V Signal (Power Supply On) 36. Demand
      37. +17V                         38. Not Used
      39. +17V                         40. Not Used
- Requires Atari 850 Interface Module or equivalent to connect to the
  Atari computer.  As such:
  400/800 OS: Responds to P: and ignores any device number
    XL OS: Responds to P:, P1:, and P2:
- Included:
   - Ribbon
   - Atari CX86 Printer Cable (825 to 850 parallel)
   - Atari 825 80-Column Printer Operator's Manual C015506 (CO15506)
- Power supply is built-in (plugs directly into the wall, 120V AC, 100W)
   - (There is no 220V/240V version of the 825.)
- Print mechanism: Centronics 737
- Made in ????????
- Sold separately:
   - Atari 825 Printer Ribbon (3 per box) CA016087
   - Atari 825 Printer Paper (Roll Paper) C016233
   - Atari 825 Paper Mandrel C016229
   - Atari 825 Paper Roll Support C016230
   - Atari 825 Paper Deflector C016231
- Technical manual: 825 Printer Field Service Manual
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