> Date: Wed, 13 Nov 1996 21:20:30 -0600 (CST)
> From: Peter Seebach <seebs@solon.com>

> I can't figure out what the "unit" number should be to boot from most
> disks on a 4/110.  I have the "sun 3" boot monitor, so my syntax is
> b(controller, unit, partition)

Here is how it works for SCSI devices:

	sd(c,u,p)
	c = controller (usually zero)
	u = unit in hexadecimal, defined as ((target * 8) + LUN)
	p = partition (0=a, 1=b, ...)

For tapes it is the same, but `p' selects which tape segment.

> ... and I have no clue what numbers it's looking for!  I know that on
> a 3/80, (0,18,0) is target 6, and (0, 10, 0) was 4, I think... but I
> have disks at other addresses.  In particular, how do you spell
> "target 0 lun 0", "target 0 lun 1", and "target 3 lun 0"?  Any help
> or pointers much appreciated.  The Sun Hardware Reference Guide doesn't
> seem to cover this... Nor does the prom's online help.

To answer your specific questions:
	sd(0,0,0)  is target 0 lun 0
	sd(0,1,0)  is target 0 lun 1
	sd(0,18,0) is target 3 lun 0

Note 3*8 is 0x18 and the PROM does not want the 0x prefix.

Gordon