HP Dc7700 HP Compaq dx7300 and dc7700 Business PC Technical Reference Guide, 1 - Page 92
Parallel Interface Connector, Table 5-12., DB-25 Parallel Connector Pinout
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Input/Output Interfaces 5.5.5 Parallel Interface Connector Figure 5-4 and Table 5-12 show the connector and pinout of the parallel interface connector. Note that some signals are redefined depending on the port's operational mode. Figure 5-4. DB-25 Parallel Interface Connector (as viewed from rear of chassis) Table 5-12. DB-25 Parallel Connector Pinout Pin Signal Function Pin Signal Function 1 STB2 D0 Strobe / Write [1] Data 0 14 LF15 ERR- Line Feed [2] Error [3] 3 D1 Data 1 16 INIT- Initialize Paper [4] 4 D2 5 D3 Data 2 Data 3 17 SLCTIN- Select In / Address. Strobe [1] 18 GND Ground 6 D4 Data 4 19 GND Ground 7 D5 8 D6 Data 5 Data 6 20 GND 21 GND Ground Ground 9 D7 10 ACK- Data 7 Acknowledge / Interrupt [1] 22 GND 23 GND Ground Ground 11 BSY Busy / Wait [1] 24 GND Ground 12 PE 13 SLCT Paper End / User defined [1] Select / User defined [1] 25 GND -- -- Ground -- NOTES: [1] Standard and ECP mode function / EPP mode function [2] EPP mode function: Data Strobe ECP modes: Auto Feed or Host Acknowledge [3] EPP mode: user defined ECP modes:Fault or Peripheral Req. [4] EPP mode: Reset ECP modes: Initialize or Reverse Req. 5-14 www.hp.com Technical Reference Guide