Increasing control information from a single general purpose input/output (GPIO) mechanism
AssigneeInternational Business Machine Corporation
InventorsRalph Bonomo, Daryl Carvis Cromer, Howard Jeffrey Locker, Joseph Michael Pennisi, James Peter Ward
Life of this patent
Estimating the term…
Abstract
Aspects for increasing control information from a single general purpose input/output (GPIO) mechanism are described. The aspects include establishing a plurality of voltage levels to indicate a plurality of states for association with installed options on a computer system planar. Further included is the determination of which of the installed options is present via the single GPIO.
Claims18
A method for increasing control information from a single general purpose input/output (GPIO) mechanism, the method comprising:
- establishing a plurality of voltage levels to indicate a plurality of states for association with installed options on a computer system planar;
- and
- determining which of the installed options is present via a single GPIO.
A system for increasing control information from a single general purpose input/output (GPIO) mechanism, the system comprising:
- a computer system planar;
- a single GPIO means coupled to the computer system planar;
- and
- an analog-to-digital (A/D) converter coupled to the single GPIO means, the A/D converter converting a voltage level signal from the single GPIO means indicative of installed options on the computer system planar.
A method to allow determination of a plurality of states from a single signal line, the method comprising:
- providing a single GPIO (general purpose input/output) mechanism on a computer system planar to detect status of at least one socket on the computer system planar;
- and
- utilizing a resistor network on a signal line to the single GPIO mechanism to provide a voltage signal level indicative of a plurality of states for use in detecting which options are installed on the computer system planar.
Dependencies are inferred from the claim text.