31 Dec
2018
31 Dec
'18
3:32 p.m.
Fritz,
One thought crossed my mind, probably not an issue, but you never know.
You mentioned that you have an RK11-C, *not* RK11-D.
There are one or two bits in a register of the RK11 that have a different
meaning/function, depending on the controller being a -C or -D. The RK11-C was quickly
replaced by the RK11-D, but I guess RSTS would know the difference. Other guys here will
be able to give a lot better light on this than me (Paul?)
A Healthy 2019!
Henk, PD8PDP
________________________________
Van: cctalk <cctalk-bounces at classiccmp.org> namens Fritz Mueller via cctalk
<cctalk at classiccmp.org>
Verzonden: Monday, December 31, 2018 11:47:23 PM
Aan: General Discussion: On-Topic and Off-Topic Posts
Onderwerp: Re: PDP-11/45 RSTS/E boot problem
On Dec 31, 2018, at 1:54 PM, Paul Koning
<paulkoning at comcast.net> wrote:
The standard idle pattern is in the data lights. I don't remember if the
"fancy" pattern appeared in V7.0 or earlier, but in any case it's an
undocumented SYSGEN option.
In RSTS/E, the display register shows the system error count. That's from I/O errors
reported by the various drivers.
Do you have a second disk pack? If so, you could use the DSKINT option in INIT to
initialize a pack, with pattern tests. That would show what the RSTS disk driver thinks
of your RK05.
Something else you might try: when you start the system, don't enter line-feed for
the quick start, but the START command. That is a more verbose version which will display
some additional messages. If anything is getting disabled, it would show there.
Thanks, Paul ? that?s a bunch of helpful info!
I have done some long-form starts, but no complaints are printed to the console.
I do have an additional as-yet-untried pack that I got in a recent eBay option. I?ll give
it an inspection and if its good to go I?ll give the pattern DSKINT a try. I only have
one RK05 drive working at the moment, but I suppose I can swap after issuing ?DS? to the
?Option:? prompt?
I?m also gearing up to throw the logic analyzer on the RK11 and see what sector(s) it is
trying to read and what error/interrupt signaling may actually be happening.
Last, any more info on that fancy light sysgen option, for future reference in case I ever
get on to a later version?
cheers,
--FritzM.