dead 3b1 assist?
Thaddeus P. Floryan
thad at btr.BTR.COM
Mon Jun 17 19:58:22 AEST 1991
In article <1991Jun17.040842.13298 at mel.dit.csiro.au> hal at ditmela.mel.dit.csiro.au (Harold A. Miller) writes:
| We have a dead 3b1. That may or may not be the "norm", I'm not used to the
| machine. In any event, the video is gone, and there isn't anyone around
| (of whom we're aware) who can fix it at a price that makes it worth the
| fixing. In the mean time, the hard drive is full of stuff that would be
| nice to recover. There is a set of backup floppies, too.
| [...]
Assuming it's only the video that has "died", you should be able to plug a
terminal into the serial port (using the pinouts shown below), login, and do
whatever recovery you deem necessary; this is assuming the /etc/inittab has
an entry to spawn a getty on /dev/tty000 ... if not, then someone'll have to
boot with the floppy boot disk and change the /etc/inittab .... not very easy
if you cannot see echoes (on the monitor) of what you're typing.
Good luck!
Pinouts for a terminal to be attached to /dev/tty000:
terminal serial port
(2)--------------(3)
(3)--------------(2)
(7)--------------(7)
+-------(6)
|
+-------(8)
|
+------(20)
You "may" need to do a similar {6-8-20} jumpering at your terminal's end
depending how your terminal is optioned.
Thad Floryan [ thad at btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]
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