Couple of cool HP 110/150 finds - test-drb@ccmp.vtda.org

6 May 2000

At 06:50 PM 5/3/00 -0700, you wrote:
...

-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Joe
Sent: Wednesday, May 03, 2000 1:12 PM
To: classiccmp(a)classiccmp.org
Subject: Re: Couple of cool HP 110/150 finds

 HP-IB ABC switch (92205Y) Used to chain up to 21
external HP-IB devices
(have you seen one of these before, Joe?) 
   I have one but it looks about like one of the standard RS-232 switch
boxs and it only switchs between four (i think!) sets of HP-IB cables.

Well, it does have three HP-IB connectors but since you can daisy chain the
IB devices, wouldn't that mean that you could have seven chained devices per
port? 
    If memory serves, my box has five HP-IB connectors. One is common and
the other four are swtiched.

    In theory, the HP-IB can have up to 32 devices per bus but many of the
devices only have three binary switch postitions on the address switches so
you can only set them for addresses 0 through 7.
...

 HP Series 100 Communicator Volumes 7-12 (very
cool) 
    Now those are unusual. I have two volumes but I've never been able to
find any more of them. Where did you find them?

What? You're asking me to give up my most productive source of free or very
cheap vintage hardware. I'll give you a hint... it's the coolest vintage
computer store in Seattle. 
   That doesn't help me any. I'm still on the opposite end of the country.

    Joe
...

These books are great! What a wealth of photos and information.

Volume 7 (1983) =International Edition. Introduces the HP150.
Volume 8 (1984) =World Wide Edition. Lotus 123.
Volume 9 (1984) =World Wide Edition. General, no specific topic.
Volume 10(1984) =WWE. Local area networking with HP computers.
Volume 12(1985) =Touchscreen II.

Ernest