Subject: Re: Problems with a DecStation 3100
To: Jean-Paul BINI <>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
List: port-pmax
Date: 08/07/1999 01:03:14
In message <001101bee079$1c52b6c0$060a40a4@goldengate.hugmynd,
>"Jean-Paul BINI"  writes:
>Hello, I'm trying to use NetBSD with an old DecStation 3100
>But I have problems ...


congratulations, actually, you hve a rather new 3100, as 3100s go.,
the PROM is one of themost recent releases and can netbot up to 3mbyte

>954672+43376+143476 -47c xfr addr : 0x8003000
>Copyright (c) 1996,1997,....
>                                    /* seems to boot now ! */
>  The NetBSD Foundation, Inc. .....
>NetBSD 1.4 (INSTALL) #12 : Fri May 7 19:50:42 EST 1999
>   root@mona:/usr/src/sys/arch/pmax/compile/INSTALL
>DECStation 3100 (PMAX)
>real mem = 12592912
>avail mem = 9617408
>using 307 buffers containing 1257472 of memory
>cpu0 at mainbus0: cpu0 : MIPS R3000 CPU Rev. 2.0 with MIPS R3010 FPC Rev.
>                                    /* why the CPU indicated is R3000, as I
>have a R2000 ?? */

it's an r200a CPU, which is an r300 core with an r200 pinout.

>kn01bus0 at mainbus0:bus0 at kn01bus0
>pm0 at ibus0: (1024x864x1) (console)
>dc0 at ibus0                        /* and here the system is stopped
>-((( */
>Is dc0 related to the mouse ?

Yes. it's a four-port DZ11 (c'est-a-dire: very dumb) serial chip,
wired up to thefour ports on the rear.
>I've read that it is possible to make a kind of terminator to plug in
>instead of a mouse  to avoid problems ...

Yes. I beleive it's in the VMS FAQ, but it's alo an FAQ here.  Perhaps
one of the kind web people will put an ascii-art diagram of the
connector on the web page.  That, and a paperclip, should fix your