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Dataproducts D-Sub 50 Parallel

 (at ???)
 (at ???)

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.

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