# Dataproducts D-Sub 50 Parallel

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50 PIN D-SUB MALE at ???.
50 PIN D-SUB FEMALE at ???.

Pin | Return | Dir | Description | Active State
--- | --- | --- | --- | ---
22 | 6 |  | Ready | High
21 | 5 |  | On Line | High
23 | 7 |  | Demand | High
38 | 37 |  | Data Strobe | High
19 | 3 |  | Data 1 | n/a
20 | 4 |  | Data 2 | n/a
1 | 2 |  | Data 3 | n/a
41 | 40 |  | Data 4 | n/a
34 | 18 |  | Data 5 | n/a
43 | 42 |  | Data 6 | n/a
36 | 35 |  | Data 7 | n/a
28 | 44 |  | Data 8 | n/a
29 | 13 |  | Parity | n/a
50 | 32 |  | Ident 0 | n/a
49 | 16 |  | Ident 1 | n/a
46 | 47 |  | Interface Verify | Low
12 | 39 |  | +5 VDC (Test) | High
27 | 11 |  | Parity Error | High
25 | 9 |  | Bottom of Form | High
24 | 8 |  | Top of Form | High
30 | 14 |  | Paper Instruction | High
31 | 15 |  | Buffer Clear | High
26 | 10 |  | Paper Moving | High
48 | 17 |  | Paper Moving | High
47 | 33 |  | Not VFU | High

Note: Direction is Host (Computer) relative Peripheral (Printer).
Note: Return is Ground signal for Unbalanced and the Negative Signal for Balanced.

Contributor: Joakim Ögren

Source:
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Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07