18 Feb
2016
18 Feb
'16
1:27 p.m.
On Thu, 2016-02-18 19:58:25 +0100, Jan-Benedict Glaw <jbglaw at lug-owl.de> wrote:
On Thu, 2016-02-18 11:08:28 -0500, Bryan C. Everly
<bryan at bceassociates.com> wrote:
The first machine I opened (3100/76 SPX) does have all the SCSI stuff
onboard.
The second box (3100/38 with graphics and flopp) does have a SCSI
daugher board, but it's quite different to
http://home.iae.nl/users/pb0aia/vax/s1.jpg on
http://home.iae.nl/users/pb0aia/vax/vs3khw.html . I made a photo of my
board: http://lug-owl.de/~jbglaw/VAXstation_3100m38_scsi_board.jpeg
There are, I think, two more MicroVAX 3100 systems down there, which
I didn't yet dismantle. Though the could have a matching board... Will
check these tomorrow.
MfG, JBG
--
Jan-Benedict Glaw jbglaw at lug-owl.de +49-172-7608481
Signature of: Lauf nicht vor Deinem Gl?ck davon:
the second : Es k?nnte hinter Dir stehen!
I confirmed that there is a NCR5380 chip on the
daughterboard and that
everything was connected. Still no joy. The one thing I'm wondering is
this. If you look at the attached picture below from
http://home.iae.nl/users/pb0aia/vax/vs3khw.html, you will see there is a
40-ish pin EPROM (?) in the bottom row of chips third from the left. Mine
just has an empty socket there. Is it possible this is causing the problem?
I'll have a look at my machines once I'm back home (one to three
hours.) If I have a machine with a SCSI daughterboard like you have,
I can probably give the EPROM to a friend for reading it out. 
