Subject: Re: How many drives can a sun3 scsi bus really support?
To: None <email@example.com, firstname.lastname@example.org>
From: None <Robertdkeys@aol.com>
Date: 11/03/2003 00:11:15
There are a couple of references to some mods to 3/60 cpu
boards, originally from, I think, Peter Koch, of the sun3archive
fame, where he mounted an internal drive on a 3/60 cpu board
in the place where the drive holes are, and ran a ribbon cable
over to a dip header just behind the usual db50 connector.
That is not apparently the p4a or p4b connectors. I just pulled
my 3/60 cpu and the dip pads are there, but it is unlabelled.
My suspicion is that there may have been some sort of 3/60
version that was never marketed, but which had a drive in
the internal space provided. I just flipped the cpu over and
that 50 pin dip pad is labelled J6. There is a pix of the mod
on his machine, somewhere on the internet. I think it is at
The difficult part seems to be adding the 50 pin dip header to
the pads. There are also some pads to draw power for the drive,
although I can't find them offhand on my board, or see if from his
pix. But, the potential is there for adding a decent output connector
or for adding an internal drive to the 3/60.