[Simh] XXDP v2

[Mattis Lind]

2015-12-30 22:59 GMT+01:00 Bob Supnik <bob at supnik.org>:

> 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.
>
>
I fully agree with Bob. I tried to make a v2.2 for RL02 but it behaves the
same as the DU-version of the v2.2. So it is NOT the driver. I jumped to
conclusions here.

I don't have a real Unibus system with a UDA50 and a drive up and running.
Another option is to hook up a RQDXn with the 11/03. But that is not done
in a short time frame either. So testing on real hardware is not possible
right now.


/Mattis


> /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.
>>
>>
>>
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