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TK50 various questions

Qbus said:
Looks like 5.4 is the magic number, things like the TK-50 , RA-80 and 81 and a lot of other stuff did not happen until 5.4 Also wonder if 16 bit 11/23 hardware is up to the task of running anything like 5.4 and above?
Click to expand...

You should be able to boot and run any version of RT11FB.SYS on _any_ pdp11.
 
I now have a 4GB SCSI 80 pin disk, 80 pin to 50 pin converter and cable, Emulex UC08 and BSD2.11 on bootable TK50 tape. I'm going to try and get this lot working together over the weekend.
 
Don, can you advise
I have had a very stable 2.11 until I moved to the PL448.
I changed TOO MUCH when I moved - disk size, upgraded firmware on the SCSI2SD etc. I have not yet compared the source/object modules for the drivers, I am working back down the chain of changes to see what I have done wrong ( I KNOW it is nothing to do with the PL448 release).
Anyway my bootstap (not on simh) says
2.11 BSD UNIX #19: Sun Jun 17 16:44:43 PDT 2012
root@pdp11:/usr/src/sys/ZEKE

ra0: Ver 5 mod 13
ra0: RA82 size=1953936
attaching lo0

phys mem = 3145728
avail mem = 2766912
user mem = 307200


My ra has different log and size viz
2.11 BSD UNIX #19: Sun Jun 17 16:44:43 PDT 2012
root@pdp11:/usr/src/sys/ZEKE

ra0: Ver 3 mod 6
ra0: RA82 size=1954000

what is the relevance of the Ver 3 mod 5 that I have?
I have checked (more than once) as to my disk size. I made the disk 1954000 on scsi2sd.
It reports smaller.
On the uncompressed disk image from your download I get
root@iain-OptiPlex-755:/usr/src/foremost/simh/sim/BIN# ls -s
total 977272
976620 2.11BSD_rq.dsk 648 pdp11 0 rx1.dsk
4 2.11cpu1144.ini 0 rx0.dsk
root@iain-OptiPlex-755:/usr/src/foremost/simh/sim/BIN# bc
bc 1.06.95
Copyright 1991-1994, 1997, 1998, 2000, 2004, 2006 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
976620*2
1953240

So only 1953240 blocks of data - is it to do with bad144 and me lot leaving a free cylinder?
[When I build my first disk from your release I make everything toooo big to try to avoid "out by 1 errors"]

On simh I get
2.11 BSD UNIX #19: Sun Jun 17 16:44:43 PDT 2012
root@pdp11:/usr/src/sys/ZEKE

ra0: Ver 3 mod 3
ra0: RD54 size=311200
attaching de0 csr 174510
de0: hardware error, pcsr1=8002<XPWR>
attaching lo0

phys mem = 4186112
avail mem = 3807296
user mem = 307200

I had not noticed an RD54 before......
All clues welcome.
I am still trying hard to learn all the steps in this stuff.
 
I don't see any errors running this image under SIMH (v3.9-0) or on my real 11/44 with an emulex UC18 scsi controller.

FYI on SIMH I use this setup (in my cpu1144.ini file):

Code: 
; model a PDP-11/44 with maximum memory, fpu, no CIS
set cpu 11/44 4096K fpp nocis

; set the boot disk as an MSCP UDA50
set rq enabled
set rq0 rauser=1000
attach rq0 2.11BSD_rq.dsk

I can't tell from your posting what type of system (CPU, disk) you are configuring in SIMH. Maybe it matters to the image I provide?

On my real h/w I have a 2GB seagate SCSI disk on my UC18 but I only use the low 1GB on it. The CPU is an 11/44 with 4MB of memory.

The "Ver 3 mod 6" line has to to do with the microcode version (3) and model (6) of the UDA disk controller emulation. My UC18 reports "Ver 6 mod 6".

Here is my SIMH bootup:
Code: 
sim> boot rq0

44Boot from ra(0,0,0) at 0172150
:
: ra(0,0,0)unix
Boot: bootdev=02400 bootcsr=0172150

2.11 BSD UNIX #19: Sun Jun 17 16:44:43 PDT 2012
    root@pdp11:/usr/src/sys/ZEKE

ra0: Ver 3 mod 6
ra0: RA82  size=1954000
attaching de0 csr 174510
attaching lo0

phys mem  = 3932160
avail mem = 3553344
user mem  = 307200

March 28 15:55:16 init: configure system

dz 0 csr 160100 vector 310 attached
ra 0 csr 172150 vector 154 vectorset attached
rx 0 csr 177170 vector 264 attached
tms 0 csr 174500 vector 260 vectorset attached
cn 1 csr 176500 vector 300 attached
erase, kill ^U, intr ^C
#
 
Last edited:
I am running an 11/73, with a UC07 controller; That PDP has been running fine until I changed things (and run fine when I change things back);-(

I wrote the PL448 release to a different SCSI2SD circuit board, different SD card, different firmware, different OS (448 not 444), I wrote the SD card using a different unix system!
I have found that the combination of the new ubuntu, the new aic7xxx, the new scsi2sd and new sd does not appear to work well (surprise surprise!).
Under ubuntu I have an intermittent disk error when dd images over to the scsi2sd. That is not good and I need to get to the bottom of that.

The fact it is intermittent on the PDP-11 and on ubuntu probably isolates it to the common components SCS2SD, the new firmware or to the SD card itself I guess.

The "set rq0 rauser=1000" line had vanished from my .ini file. Putting that back in moved me to a RA82 disk of the right size again, thanks.

However my PDP-11 reports
ra0: Ver 5 mod 13
ra0: RA82 size=1953936

I now understand the vers/model
but the disk size is different to what you get on your real machine.
Thanks for your input. I press on.
 
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