Re: rtVAX300 .. adding an CPU Type..

[christos%astron.com@localhost (Christos Zoulas)]

In article <20130103220241.GB5637%beast.freibergnet.de@localhost>,
Holm Tiffe  <holm%freibergnet.de@localhost> wrote:
>Hi,
>
>As some of you already know I'm fiddeling around with an ISA Board
>in a PC that has an rtVAX 300 CPU on it.
>
>Here is a (bad) picture:
>
>http://www.tiffe.de/images/11122012114.jpg
>
>The Board has two serial interfaces that featuring an SCN2681,
>an Ethernet Interface with SGEC, and some RAM (haven't looked how much jet,
>sorry)and a TIL311.
>The 50 Pin Berg connector isn't SCSI [:-(], that is some propietary
>Interface. Still have to ask at "AEON Systems Incorporated" if they still
>have docs for an ISA300 Board and want to give them away...
>AThis Borad was in a ordinary 486-PC with an Adaptec Board and a SCSI disk,
>there is some SCO-Unix on the disk (have the dump, not the disk).
>
>The most interesting doc about the rtVAX300 CPU is the rtVAX 300 User
>Hardware Manual (http://www.tiffe.de/Robotron/VAX/382ABUG2.PDF).
>With this manual, the Help from Mouse and some others I've managed to
>hack a little in NetBSD6's bootloader and netbooted  that thing:
>
>rtVAX 300 V1.2
>
>E...D...C...B...A...9...8...
>
>>>> b eza0
>
> 83 BOOT SYS
>
>
>-EZA0
>
>2..1..0..
>vax_cpudata: a000006
>vax_cputype: a
>vax_boardtype: a000000
>vax_boardtype(sie): a000009
>fromnet: 1

Add the VAX_BTYP_? define in include/sid.h for that and then in the switch
for the boardtype in locore.c. Then start with some similar ka file or
find the docs for that cpu and adjust...

christos