Study UNIX Kernel


 
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Operating Systems SCO Study UNIX Kernel
# 15  
Old 08-19-2015
This might be of interest.

Expanded Main Page - OSDev Wiki

They have a forum page which I joined some time ago but not been on since I adopted shell scripting as my language of choice.

Enjoy...
# 16  
Old 08-19-2015
I'd like to ask what's the C compiler on which unix 6 was written for pdp-11 machine and how to get it's manual pls ..

knowing C
compiler manual
machine architecture and instruction set
source code of unix version 6
lion's notes

this mix could put me on the begging of the trace ...isn't that true ?
# 17  
Old 08-19-2015
The closest thing to a description of the C Language and compiler used for version 6 would be: The C Programming Language by Kernighan and Ritchie. Note that this is the 1st edition describing the original K&R C; not later editions that described using the ANSI C language and subsequent revisions of the ISO C standards.

And note that, of course, the standard C library is not available in the kernel; libc.a is only available to link with user level programs. And, if you're thinking about the shared libraries that are used today; they hadn't been envisaged (let alone implemented) in the UNIX version 6 timeframe.
This User Gave Thanks to Don Cragun For This Post:
# 18  
Old 08-20-2015
I was searching on the internet and found many pdp-11 models at wikipedia.com page:
https://en.wikipedia.org/wiki/PDP-11 ,in the models section in the page i found many many models which model of pdp-11 ran unix 6 and was targeted by Ritchie's Compiler For Unix ... does it vary from model to another ?? thanx
# 19  
Old 08-20-2015
It was developed on the PDP-11/20, so at the very least, ought to work there. Most of the differences between models were I/O buses and peripherals...
This User Gave Thanks to Corona688 For This Post:
# 20  
Old 08-20-2015
If I remember correctly UNIX version 6 could run on any PDP-11. UNIX version 7 required a PDP-11/45 or later model because it assumed the separation of instruction (code) space from data space that wasn't available in earlier models.
These 2 Users Gave Thanks to Don Cragun For This Post:
# 21  
Old 08-24-2015
Lets not forget Mr. Richard Stevens books, including Advanced Programming in the Unix Environment.
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