It's the MMU.
After adding the BEVENT disable logic, I noticed that the MMU option
cannot be disabled in any model, although it was in fact optional in the
KDF11A module (but not the 11/23 system). So I hacked the configuration
table to make the MMU optional and tried an 11/23 with no MMU. It hangs
just like the 11/03, 04, 05, and 20.
Why it fails is unknown. Mattis' real 11/04 gets further than the
simulator, although it ultimately fails.
/Bob
On 12/30/2015 12:00 PM, [email protected] wrote:
Message: 1
Date: Wed, 30 Dec 2015 11:28:35 -0500
From: Bob Supnik <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [Simh] XXDP v2
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
I did a quick hack and removed the clock from the device list,
effectively disabling it. With that done, the 11/23 runs XXDP V2
correctly, with 64KB of memory. I'll add BEVENT DISABLE to formalize this.
So the failing systems are the 03, 04, 05, and 20. Possible common factors:
- no memory management
- no EIS
I tried an 11/03 with EIS and no clock, and it fails, so EIS does not
appear to be the problem.
I'm now looking for XXDP monitor sources. The failure happens before
anything is printed, but a listing would still be of great help.
/Bob
------------------------------
Subject: Digest Footer
_______________________________________________
Simh mailing list
[email protected]
http://mailman.trailing-edge.com/mailman/listinfo/simh
------------------------------
End of Simh Digest, Vol 143, Issue 27
*************************************
_______________________________________________
Simh mailing list
[email protected]
http://mailman.trailing-edge.com/mailman/listinfo/simh
