Method of controlling a PC parallel port switch for connecting m

Details Method of controlling a PC parallel port switch for connecting m Method of controlling a PC parallel port switch for connecting m

1995-01-24

1998-05-19

Auve, Glenn A.

395311, G06F 1310

Patent

active

057548811

ABSTRACT:
A method for controlling a switch on the parallel port of a PC for the purpose of selecting between multiple peripherals connected to the parallel port is provided. In a first embodiment, the method includes setting a data value to control the switch. In a second embodiment, the method includes sending a PCL command sequence to control the switch. In a third embodiment, the method includes toggling a control line to control the switch. In a fourth embodiment, the method includes setting a control line and toggling a data line to control the switch.

REFERENCES:
patent: 5133055 (1992-07-01), Lieberman et al.
patent: 5234700 (1993-08-01), Larsen et al.
patent: 5276443 (1994-01-01), Gates et al.
patent: 5555436 (1996-09-01), Gavish
Diamond, Stephen L., "A new PC parallel interface standard", IEEE Micro, vol. 14, issue 4, Aug. 1994, pp. 3 and 78.
Standard for Interface and Protocol Extensions to IEEE Std. 1284 Compliant Peripheral and Host Adapter Ports, IEEE P1284.3, Draft D1.15 Sep. 13, 1994 .

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