[comp.sys.sun] Sun 2/50 Question

weber@cg-atla.agfa.com (02/02/90)

Ya, we've had one or two of those around here but not many as we didn't
productize it.  The models that we did have around were for evaluation and
I thing that there are still one or two about somewhere.

As I remember, that model had a single board in the base of the monitor
just like the 3/50, 3/60, etc.  In fact, isn't it just like a 3/50 but
with a 68010 (Sun-2) on it?  I think you have the Lance Ethernet interface
(le0) which is faster than the Intel interface (ie0).  The SCSI interface
(that 50pin connector on the back) is anyone's guess but I think it should
be a Western Digital chip and it is what it is.

Your tape drive has to be a 40 or 60MB unit with a OPTI interface or
perhaps an Emulex MT-02 set for SCSI target 4.

Typical and correct drives (so they are bootable) would be ST-506
interface and Maxtor 1140 (140MB) or 2190's (190MB) would be the correct
ones to boot off.  The controller would be an Adaptec 4000A SCSI/ST506
disk controller.  I've seen the drives for sale in PC magazines for about
$1100 and they're solid drives, much better than your average PC quality.
Set the first disk controller at SCSI target 0.

Remember to put in the SCSI termination resistors on the last device on
the bus and that the SCSI bus cannot be longer than 20feet.

larrys@uunet.uu.net (02/06/90)

Well, I have fooled around with 2/120's and ran a 141MB ESDI disk on them.
Sun has a combined 2MB board with SCSI controller which plugs upstairs
from the CPU and pokes the 50-pin D through a hole in the 2/50 panel.

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because they have forgotten about the old models.  Apex: 206-867-1900.

datri@uunet.uu.net (Anthony A. Datri) (02/10/90)

=As I remember, that model had a single board in the base of the monitor
=just like the 3/50, 3/60, etc.  In fact, isn't it just like a 3/50 but
=with a 68010 (Sun-2) on it?

Not really.  Two slots, the bottom one for the cpu, the upper one for a
SCSI/memory semi-daughterboardish board.  Really hideous to extract and
insert.

=(le0) which is faster than the Intel interface (ie0).  The SCSI interface
=(that 50pin connector on the back) is anyone's guess but I think it should
=be a Western Digital chip and it is what it is.

Unless you have the SCSI board, the connector goes nowhere.

=Typical and correct drives (so they are bootable) would be ST-506
=interface and Maxtor 1140 (140MB) or 2190's (190MB) would be the correct
=ones to boot off.  The controller would be an Adaptec 4000A SCSI/ST506
=disk controller.

MD21/ESDI disk or embedded SCSI should work fine too.