> 	I was correct in my download of the *secondary* boot loader from 
> ftp.netbsd.org. I copied it to the root directory of sd0. I tried all of 
> primary boot programs listed in /usr/mdec, but they all give me the same 
> error:
> 
> >>> b dka0
> -dka0
> howto 0x0 bdev 0x2a, booting...done. (18280+37596)
> CPU type 11 not supported by boot
> Let's see how far we get ...

This is still the same old *primary* boot loader.

I think your problems stem from mixing new and old versions of files
used during the boot process; Try to use 1.3 versions only.

IMHO what you should do is:
	- take *primary* boot loader from 1.3's /usr/mdec/ and use
	  this file as argument to `disklabel sd0 -B -b ...`
	- `newfs /dev/rsd0a`
	- `mount /dev/sd0a /mnt`
	- copy 1.3's *secondary* boot loader into the to-become root
	  directory, ie. `cp /../1.3/boot /mnt/`
	- copy 1.3's kernel into the same directory
	- if you've the distribution handy, unpack the base package
	  into the /mnt/ directory

Now halt the machine and reboot with ">>> b/3 dka0" and let's see how
far you get...

Ciao,
	bertram