[Simh] Problems install RSX-11M+ v4.6

[Mark Pizzolato]

Since simh autosizes MSCP disks, if you keep using the same original disk
Images you might have created initially, you may not be changing anything
if you keep on attaching the same disk image after you change the disk type.

The output of sim> SHOW RQ will show how big the disks will appear to the
operating system once you start things running.

From: Simh [mailto:simh-bounces at trailing-edge.com] On Behalf Of Johnny Billquist
Sent: Sunday, May 7, 2017 4:31 PM
To: Ray Jewhurst <raywjewhurst at gmail.com>
Cc: simh <simh at trailing-edge.com>
Subject: Re: [Simh] Problems install RSX-11M+ v4.6

The 128k thing is physical memory, which is sonething else than size of the disk. There is an option in simh in the config to explicitly tell how large disk you want. Check the documentation.

Use a disk of at least 1g, and we can move on to the next problem, which is going to be the number of file headers on the disk, unless you read that manual I gave the link to.

Easy howto pages on the internet are nice, but sooner or later you need to read the docs and understand what you are doing.

Johnny

Ray Jewhurst <raywjewhurst at gmail.com> skrev: (8 maj 2017 01:08:19 CEST)
I tried running every size disk imaginable and I still get the same error and it still states 128KW.  The small disk I tried was 159MB. BTW, that prebuilt system also had the same error and 128KW again and it was a approx 10MB Massbus disk running on a 11/45.Could this be a bug?  I am following everything to a T.  Should I try a non-plus sysgen to see if I get the same error?
Doing my best,
Ray

On Sun, May 7, 2017 at 5:51 PM, Johnny Billquist <bqt at softjar.se<mailto:bqt at softjar.se>> wrote:
On 2017-05-07 23:01, Alan Frisbie wrote:
On 05/07/2017 01:21 PM, Ray Jewhurst wrote:

RSX-11M-PLUS V4.6  BL87 128.KW<http://128.KW> <http://128.KW>  System:"Baseline"
 >RED DU:=SY:
 >RED DU:=LB:
 >RED DU:=SP:
 >MOU DU0:"RSX11MPBL87"
 >@[2,54]BASTART.CMD
12:46:19  *** GEN    Checkpoint space allocation failure
12:46:19  *** GEN    Checkpoint space allocation failure
12:46:19  *** GEN    Checkpoint space allocation failure
12:46:19  *** GEN    Checkpoint space allocation failure
12:46:19  *** GEN    Checkpoint space allocation failure
12:46:19  *** GEN    Checkpoint space allocation failure


This means that the disk you are running from (DU0:) does not
have enough free space for RSX to allocate a checkpoint file.

Ah! Yes, of course. Thanks for that, Alan. Didn't even think about the possibility that the disk would be that small, since he was using MSCP.

Ray, start over, and create disk image files that are larger.
Start over and tell SIMH to make DU0: (rq0) larger.   I would
suggest at least 32 MB if you plan to do anything useful with
the system.   Don't go above 500 MB, however, as the ODS-1 disk
structures can't handle anything that large.

No, ODS-1 handles larger disks fine. The limit is 8G. If you go above that, there is no harm, but the disk will just be truncated to 8G anyway, so no point in going larger.
I would suggest something around 2G or so, and you're set for life.
(Personally I run with four 8G drives, but then again, I'm not exactly normal when it comes to RSX...)

        Johnny

--
Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at softjar.se<mailto:bqt at softjar.se>             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol
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