[Simh] pdp11 and unix

[Clem Cole]

If you were used to building your own tools, you might not.  Also if you
are bootstrapping from something else (like a large timesharing system from
another manufacturer).   You might put your tools on the other system,
until the new system could "self host."

We do the same things today.

Clem

On Fri, Feb 26, 2016 at 7:23 PM, Will Senn <will.senn at gmail.com> wrote:

>
>
> Sent from my iPhone
>
> > On Feb 26, 2016, at 5:28 PM, Nigel Williams <
> nw at retrocomputingtasmania.com> wrote:
> >
> >> On Sat, Feb 27, 2016 at 10:24 AM, Johnny Billquist <bqt at softjar.se>
> wrote:
> >> On 2016-02-26 23:47, Eric Smith wrote:
> >>>> On Feb 25, 2016, at 9:26 PM, Gregg Levine <gregg.drwho8 at gmail.com
> >>>> <mailto:gregg.drwho8 at gmail.com>> wrote:
> >>>>
> >>>> Version Zero was hand coded on a PDP-7
> >>>
> >>>
> >>> I know Gregg is right.  But .. Can you /imagine?/
> >> Not sure I understand this comment either. Are you suggesting that
> coding an
> >> OS is assembler is something exceptional or complicated, or unusual?
> >
> > I took "hand-coded" to mean Version Zero was (initially) done without
> > an assembler, they wrote down the instructions in machine code.
> >
> > Perhaps not unusual for the 1960s but laborious none-the-less.
> > _______________________________________________
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>
> I don't understand this. The PDP 7 had an assembler and debugger. Wouldn't
> they have used the assembler to generate the bootstrap system?
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