Human Interface Link
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This article is a stub. You can help Deskthority by expanding it.
Human Interface Link (HIL) is a bus protocol by Hewlett-Packard for connecting various input devices to their HP 9000-series workstations. It was replaced by PS/2 in the mid-90's.
Devices can be connected in series.
The connectors are 4,6 or 8-pin SDL, with connectors keyed differently for upstream and downstream ports.
It uses 12V voltage, which is a reason why few attempts at building a converter with 5VDC microcontrollers have been attempted.
Forum threads
- Deskthority—HP-HIL. An effort at reverse-engineering the protocol and building a converter for it.
