port-hppa/53210: NetBSD 7.1.2 fails to boot on 712/100

[commodorejohn%gmail.com@localhost]

>Number:         53210
>Category:       port-hppa
>Synopsis:       NetBSD 7.1.2 fails to boot on 712/100
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-hppa-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 24 22:40:00 +0000 2018
>Originator:     John Ames
>Release:        7.1.2 and 7.0.2
>Organization:
>Environment:
Unavailable.
>Description:
The NetBSD install CD will not boot on my HP 9000 712/100 workstation. The symptoms are essentially identical to those reported in PR #52129 except that the cpu_modelno value reported is 602. I've tried the install CDs for both 7.1.2 and 7.0.2 with identical results; 6.1.5 did not give this error message, but hung for some other reason.
>How-To-Repeat:
Boot a NetBSD 7 kernel on a 712/100 workstation, apparently.
>Fix: