Agilent Technologies 8719D User Manual page 417

Pin assignments:
pin 1 is the data strobe
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pin 16 selects the printer
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pin 17 resets the printer
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pins 18-25 are ground
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Electrical specifications for lTL high:
volts(H) = 2.7 volts (V)
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Electrical specifications for TI'L low:
current = 0.2 milliamps (mA)
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Figure 6-81. parallel Port Input and Output Bus Piu Locations in GPIO mode
4 3 2 I 0
Application and Operation Concepts