[TUHS] Upgrading from 11/40 to 11/45 in Unix v6

ron at ronnatalie.com ron at ronnatalie.com
Tue Jan 1 03:30:02 AEST 2019


Yeah, ISVTX only worked on 410 and 411 files.   It locked the text segment in swap.   It kind of got obsoleted by later versions that could load stuff direct to memory from the disk image.

 

From: Clem Cole <clemc at ccc.com> 
Sent: Monday, December 31, 2018 10:54 AM
To: Ronald Natalie <ron at ronnatalie.com>
Cc: Will Senn <will.senn at gmail.com>; The Eunuchs Hysterical Society <tuhs at tuhs.org>
Subject: Re: [TUHS] Upgrading from 11/40 to 11/45 in Unix v6

 

 

 

On Mon, Dec 31, 2018 at 10:05 AM <ron at ronnatalie.com <mailto:ron at ronnatalie.com> > wrote:

Yep, and notwithstanding split I/D, we switched to -n (410 magic) read-only code space.

Agreed, that was pretty standard and used the sticky bit as needed.  IIRC this was to help sharing, but I admit those bits in my brain had not been refreshed in years.

 

 

 

Of course, the kludge nargs() function didn’t work at all in split-I/D mode unless you made a hack to the processor to change the behavior of MFPI.

Ah yes, I've forgotten that hack.   Does simh or any of the other simulators support it?   It would need to be an option of course.

 

 

 

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