HP9885 8" floppy unit - resume

From: Robert F. Schaefer <rschaefe_at_gcfn.org>
Date: Sat Apr 5 18:40:01 2003

----- Original Message -----
From: "SPC" <spedraja_at_ono.com>
To: <cctalk_at_classiccmp.org>
Sent: Saturday, April 05, 2003 2:04 PM
Subject: Re: HP9885 8" floppy unit - resume

PLEASE DON'T YELL. It makes you sound hostile and angry, and most people
consider it quite rude. I will attempt to answer some of these questions,
the ones I can't answer I will ignore.


> Said this, I have some questions about the machine and its peripherals.
> Here we go:

> CAN BE ONE WIDE CENTRONICS CONNECTOR IN THE BACK
> OF THE HP9000/380 WITH THE LEGEND "SCSI/HS HP-IB"
> A GPIO PORT ?

The 50-in connector labled SCSI/HS-IB can be either SCSI or HS-IB. Without
an added option board mounted inside the case, it is a SCSI port. With the
card installed and the cable from the connector moved from the planar to the
card it becomes an HS-IP port.

> HOW CAN I UPGRADE ONE HP9000/380 TO ONE HP9000/385 ?

Move the jumper labled `P10' from `25' to '33'. The jumper is located
daigonally opposite from pin 1 on the CPU, upper left corner of the CPU as
seen from above with the DIO connectors closest to you. Replace the
socketed 50MHz oscillator `Y2' located to the immediate right of the CPU as
viewed above with a 66MHz oscillator. This will overclock the 25MHz 68040
to 33MHz. It will most likely void your warranty.

> WHERE CAN I LOCATE ONE 3 BNC ADAPTER TO A VGA MONITOR ?

http://www.google.com/search?q=BNC%20to%20VGA would be a good place to
start. You can purchase them pre-made, or assemble one yourself if you
like.

> WHAT MODEL OF SERIAL TERMINAL CAN I USE WITH ONE
> HP9000/380 ?

The default settings are 9600 baud, 8 bits no parity 1 stop bit. Just about
any terminal ever made will work, provided the cables can be mated up and
the console can be switched to the serial port.

When the serial console is enabled, it is merely an extension of the
graphical head. The HP-HIL keyboard remains enabled (and presumably the
framebuffer too), any characters entered on it will be echoed to the console
as if they were entered via the terminal attached to the serial console.
This will allow you to do things like play around on the HP-HIL keyboard and
accidentally switch the console back to the graphical head...

> WHERE CAN I FIND ADDITIONAL INFORMATION ?

http://www.netbsd.org/Ports/hp300 is where I found most of my information.
Another place to check would be http://www.google.com/search?q=HP+9000+380.

> WHAT IS ONE 34-PIN CONNECTOR IN THE HP 98574 BOARD ?
> MAYBE A FLOPPY CONNECTOR ?

I'm not positive, but I believe it is where the HS-IP option board connects
to the planar.

> Best Regards
> Sergio

Bob
Received on Sat Apr 05 2003 - 18:40:01 BST

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