Re: Help about installing NetBSD on a VAXstation 4000/90 (Cougar)

[emanuel stiebler <emu%e-bbes.com@localhost>]

On 2018-05-03 11:49, Felix Deichmann wrote:

>> I'm in the process of reading the VAXstation 4000/90 documentation 
>> and see if I can override the S3 button state somehow.
> 
> Interesting point. Look for 16-bit "Configuration Register" (CFG) at
> physical address 0x25800000. Bit 3, ALCON, reflects the "Alternate
> Console" S3 switch, and is 1 when the serial console is to be used. See
> KA49 Processor Module Specification V 1.1, chapter 5.2.
> However, the CFG register is described as read-only!

Anybody found this "KA49 Processor Module Specification V 1.1" online
anywhere?