[Simh] XXDP v2

[Bob Supnik]

The "2.2" image on ibibilio is actually XXDP+, the "V1" monitor. It runs 
everything, including the 11/03 and 11/23 with BEVENT enabled. The 2.5 
image runs on the 03 and 23 with BEVENT disabled, as well as the 04, 05, 
20; in effect, everything as well.

So the problem occurs in Mattis' XXDP 2.2 image. For the 2.2 image, all 
the non-MMU systems fail on the simulator, including the 11/23 if the 
MMU is disabled. The failures appear be similar.

I have not found sources for the XXDP V2 monitor.

/Bob

On 12/30/2015 3:08 PM, simh-request at trailing-edge.com wrote:
> Great that we have a solution for BEVENT!
>
> According to the manual XXDP shall resort to the small monitor if the MMU
> is non present or faulty. (page 2-2 indicate so as far as I read it)
>
> I tested the images at
> http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/xxdp/
> I can boot the two XXDP RL02 images attached to rl0 on 11/04, 11/05 and
> 11/20.
>
> PDP-11 simulator V4.0-0 Beta        git commit id: ea4d9a16
> sim> set 11/04
> Disabling XQ
> sim> attach rl0 ./xxdp22.rl02.img
> sim> b rl0
>
>
> CHMDLD0 XXDP+ DL MONITOR
> BOOTED VIA UNIT 0
> 28K UNIBUS SYSTEM
>
> ENTER DATE (DD-MMM-YY):
> Simulation stopped, PC: 150574 (BPL 150652)
> sim> attach rl0 ./xxdp25.rl02.img
> sim> b rl0
>
>
> CPU NOT SUPPORTED BY XXDP-XM
>
>
>
> BOOTING UP XXDP-SM SMALL MONITOR
>
>
> XXDP-SM SMALL MONITOR - XXDP V2.4
> REVISION: D0
> BOOTED FROM DL0
> 28KW OF MEMORY
> UNIBUS SYSTEM
>
> RESTART ADDRESS: 152010
> TYPE "H" FOR HELP
>
> .
> Simulation stopped, PC: 151006 (TST R0)
> sim> set 11/05
> sim> b rl0
>
>
> CPU NOT SUPPORTED BY XXDP-XM
>
>
>
> BOOTING UP XXDP-SM SMALL MONITOR
>
>
> XXDP-SM SMALL MONITOR - XXDP V2.4
> REVISION: D0
> BOOTED FROM DL0
> 28KW OF MEMORY
> UNIBUS SYSTEM
>
> RESTART ADDRESS: 152010
> TYPE "H" FOR HELP
>
> .
> Simulation stopped, PC: 151002 (JSR PC,150664)
> sim> set 11/20
> sim> b rl0
>
>
> CPU NOT SUPPORTED BY XXDP-XM
>
>
>
> BOOTING UP XXDP-SM SMALL MONITOR
>
>
> XXDP-SM SMALL MONITOR - XXDP V2.4
> REVISION: D0
> BOOTED FROM DL0
> 28KW OF MEMORY
> UNIBUS SYSTEM
>
> RESTART ADDRESS: 152010
> TYPE "H" FOR HELP
>
> .
> Simulation stopped, PC: 150674 (BPL 150750)
>
> So it cannot be the MMU (not alone at least). It has to be a combination
> with device driver.
>
>