[TUHS] Will pdp 11/04 run unix?

[Angelo Papenhoff]

On 30/07/20, Noel Chiappa wrote:
>     > From: Angelo Papenhoff
> 
>     > I believe 11/20 UNIX also needs the EAE.
> 
> Some applications might have used it (the story about the KS11 bug with the
> KW11-A confirms they did use it on that machine), but I found no trace of use
> of it in a quick scan of the entire Version 1 source (the one which is
> extant).
> 
> Also, the first file in the OS source:
> 
>   https://www.tuhs.org/cgi-bin/utree.pl?file=V1/u0.s
> 
> lists the addresses of all device registers, and the KE11-A isn't there.

Oh ok. The B runtime uses the EAE so i assumed it was used in other
places as well.

> If the KE11 is needed to run some application on the -11/04, there are
> KE11-B's (program compatible, but a single hex card) available, ISTR.  For
> emulation, something (SIMH?) supports it, since the TV -11 on ITS (now running
> in emulation,I'm pretty sure) uses it.

Well the TV-11 is a tough question. I originally wrote an 11/05 emulator
because some document said it was an 11/10 (which is the same thing).
But other sources claimed it was an 11/20. you can build both versions
and both work. My EAE emulation is based on the KE-11A document from
bitsavers. (code here: https://github.com/aap/pdp11 )

aap