AT&T and Unix

John McNamee jpm at bnl.ARPA
Wed Jan 16 06:37:29 AEST 1985


>From: Ron Natalie <ron at BRL-TGR.ARPA>
>
>Let me know next time you see the sources to MSDOS lying around anywhere.

MSDOS is small. It is written in assembly language. It is quite possible
to change it without sources (I've done it). Sure its a pain to disassemble
the code, but it can be done. Unix is written in C. Its huge. You really
cant disassemble it and hope to understand what is going on (that is the
nature of compiler output).

MSDOS is also a very different type of system. I can do things on MSDOS
without ever touching its kernel that would require kernel changes on Unix.



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