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Annotation of 43BSDTahoe/man/man4/vax/hdh.4, revision 1.1

1.1     ! root        1: .\"    @(#)hdh.4       6.1 (Berkeley) 8/8/85
        !             2: .\"
        !             3: .TH HDH 4 "August 8, 1985"
        !             4: .UC 6
        !             5: .SH NAME
        !             6: hdh \- ACC IF-11/HDH IMP interface
        !             7: .SH SYNOPSIS
        !             8: .B "pseudo-device imp"
        !             9: .br
        !            10: .B "device hdh0 at uba0 csr 166740 vector hdhintr"
        !            11: .SH DESCRIPTION
        !            12: The 
        !            13: .I hdh
        !            14: device provides an HDLC Host (HDH)
        !            15: interface to an IMP.  It is normally used when participating
        !            16: in the DARPA Internet.  The controller itself is not accessible
        !            17: to users, but instead provides the hardware support to the IMP
        !            18: interface described in
        !            19: .IR imp (4).
        !            20: When configuring, the 
        !            21: .I imp
        !            22: pseudo-device must also be included.
        !            23: .SH DIAGNOSTICS
        !            24: .BR "hdh%d: not alive" .
        !            25: The initialization routine was entered even though the device
        !            26: did not autoconfigure.  This indicates a system problem.
        !            27: .PP
        !            28: .BR "hdh%d: cannot get chan %d uba resources" .
        !            29: Insufficient UNIBUS resources existed to initialize the device.
        !            30: This is likely to be a shortage of UNIBUS mapping registers.
        !            31: .PP
        !            32: .BR "hdh%d: LINE UP" .
        !            33: This indicates that both the HDLC and HDH protocols have declared the
        !            34: link to the IMP alive.
        !            35: .PP
        !            36: .BR "hdh%d: LINE DOWN" .
        !            37: This indicates that the link to the IMP has died.
        !            38: .PP
        !            39: .BR "hdh%d: HOST SEQUENCE ERROR"
        !            40: .br
        !            41: .BR "hdh%d: IMP SEQUENCE ERROR"
        !            42: .br
        !            43: .BR "hdh%d: HOST DATA ERROR"
        !            44: .br
        !            45: .BR "hdh%d: TIMEOUT"
        !            46: .br
        !            47: These errors indicate that an HDH protocol error has been detected.
        !            48: .PP
        !            49: .BR "hdh%d: cannot get supervisor cmnd buffer" .
        !            50: This error indicates that an
        !            51: .I mbuf
        !            52: could not be allocated to send a command to the IF-11/HDH.
        !            53: .PP
        !            54: Any other error message from hdh%d: indicates a serious error
        !            55: detected by either the driver or the IF-11/HDH firmware.

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