Subject: Re: Building a Kernel for Classic II
To: Andrew Foakes <netbsd@foakes.demon.co.uk>
From: Colin Wood <cwood@ichips.intel.com>
List: port-mac68k
Date: 08/25/1998 13:01:43
Andrew Foakes wrote:
> About booting on a Classic II, Colin Wood (and others) suggested:
> 
> >Can you try booting a -current kernel from MacOS?  That's really the only
> >way to know for sure.  Scott has made some changes recently that just
> >might (with emphasis on the might) help that machine work....
> 
> Tried the GENERIC-81 kernal and it stopped after the screen cleared with 
> the message:
> 
> System RAM: 10452992 bytes in 2552 pages.
>      Low = 0x0, high = 0x9f8000
>   no internal video at address 0 -- videoaddr is 0xfee09a80
> 
> But then nothing and I have to hit the bong button.

Is this with "extra kernel debug messages" (or something like that) turned
on in the booter?  If not, could you try again with it on?  Just hoping
something more useful might pop up ;-)
 
> [I assume the memory information is correct - 10Mb of memory with the 
> 512x342 display at the top ending at the highest byte.  Why is high less 
> than start of video? - I knew this once but have forgotten.  Is something 
> mapping here?]

You'd have to go dig thru the devnotes on this model.  It probably
explains this.

> Should I be using the other current kernels rather than straight GENERIC? 
>  I couldn't find an explanation for what the others were, but I thought 
> that the HWDIRECT option was now turned on in GENERIC, so I shouldn't 
> need any other options, should I?

I'm pretty sure it's not an ADB problem (and the Classic II should be
supported just fine under HWDIRECT ADB support).

Later.

-- 
Colin Wood                                 cwood@ichips.intel.com
Component Design Engineer - PMD                 Intel Corporation
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I speak only on my own behalf, not for my employer.