On Sat, 24 Apr 2004, Joe R. wrote:
  At 11:05 PM 4/23/04 -0600, you wrote:
 There was a prototype of the 64000 with a 5MB
hard drive, but I don't know if it was ever
produced.
The original 64000 benchtops had a tape drive
(DC100? DC300? 
    I want to say DC300 but I'm not sure, it's been a long time. However
 it's the same tapes that are used in the HP-85s. Check the archives, they
 have been plenty of discussions about HP-85 tapes and drives. Don't waste
 your time or money on old HP tapes, they're ALL bad. Take my word for it!!! 
DC100!  DC300s were the big suckers - about 4x6x.625 inches!
                                                - don
   You can use the old DC 2(something) 40 Mb tapes that
were used for backups
 in PCs.  The DEC CompacTape will also work. The tapes will have to
 formatted. I'm not sure if the 64000 can do that or not but the HP-85 and
 9825 can so I suspect the 64000 can too.
 Can't remember, IIRC it was the
 same drive used in the 26xx terminals, but a
different data format on the tape, of course :-)
and a later option had two 5.25 floppy drives in
place of the tape drive. 
    The ones that I've seen with the tape drives are marked 64000. The ones
 with the two floppy disks were marked 64100 and the large "portable" one
 were marked 64110. The portable version is built like an 
oversize (and
  overweight!) Kaypro.
The whole idea was to put several 64000s on
one "large" disk drive using the HP-IB port on
the back. The resulting arrangement was called
a "cluster" in the HP manuals. 
    I've seen that shown in some of the manuals but I suspect that they
 would require the use of some kind of SRM (Shared Resource Manager) software.
  You could also hook
 up a standard HP-IB printer to the cluster...
I seem to remember some mumbo-jumbo where the
disc had to be HP-IB ID 0 and the printer ID 1,
but that may have just been the early devices.
We used 7920s (50MB) and 7925s (125MB) until the
winchester types were available (7914, etc.) The
64000s would boot from the common disk. You might
be able to locate some of those around... 7906 with
the HP-IB option should also work, but you would
probably have better luck locating a CS-80 drive
like a 7912/7914/etc. 
    You'd have a lot better luck finding a 7957, 7958 or 7959. They're a lot
 smaller, newer and more reliable. I've NEVER found one of the large 79xx
 drives that was still working. The 7957, 7958 and 7959 are roughly 80 Mb,
 150 Mb and 300 Mb capacity. If you only need 15, 20 or 40 Mb then you can
 probably use a 9133, 9134, 9153 or something of that type. 20 Mb doesn't
 sound like much but it's more than enough for most of the old HP computers.
 I have a 80 Mb 7958 attached to my HP Integral and I've installed every
 piece of software that was ever available for the IPC and I've only used a
 fraction of the drive.
   Hint. If you're considering the purchase of any of these HP drives, plug
 it in first and power it up without connecting it to a system. The newer
 ones have built-in self test and thry will run for about a minute and test
 the drive. If the fault light comes on and stays on then the drive is bad
 so don't buy it. Some of the early ones have a 2 character display on the
 back. If they pass selftest it will show P and the HP-IB code (2 for
 example). If they say F something then they failed self test. ALSO on some
 (or all?) models powering them up >>with no system attached<< will cause
 them to park the heads. That's another reason that I always power them up
 before purchasing and moving them.
    One more thing! If you get involved with any of the 3.5" floppy drives
 be warned that the double sided drive have a bad tendency to get gummy and
 not open completely. When that happens, the top head will catch on the disk
 when you try to insert or remove it. That will ruin both the head and disk.
 Check these carefully BEFORE even putting a disk in them. The good news is
 that all you need to do to fix the problem is to clean the old grease off
 the drive and relubricate it. Check the archives for more information.
If it has floppies (like the "portable" version) you
can boot it from floppy, if you have them... The ones
for the portable unit should boot in a crock. (You
could also put the "portable" (dragable?) unit on
a benchtop cluster and it would boot from the cluster
if there wasn't a boot floppy in the drive.)
Actually, you need the base OS to boot the unit and
the 80186 emulator code. Surely someone on this list
has the system tapes for a 64000 laying around... 
     I believe I gave some to Frank a couple of years ago but the biggest
 problem is going to be finding a good tape drive. If somebody is serious
 about these they should fix one of the tape drives then connect a external
 floppy drive and dump the tapes to a^H MULTIPLE floppy disk. That's what
 I've been wanting to do with the HP-85 and HP 9825 software. The tape drive
 isn't exactly the same as that used in the HP-85 and other calculators. It
 is the same as that used in some of HP Spectrum Analyzers and other test
 equipment. But it's similar enough that you can follow the instructions for
 fixing a HP-85 tape dirve. Those have been published here on the list
 several times and should be available in the archives. The main things that
 you need to watch are to get the roller the right size and close to being
 round.
    Joe
Good luck...
Bill
SHAUN RIPLEY wrote:
  Hi guys,
   Does HP 64000 have a build in HD? If I don't have
 the floppy disks, can I boot it? Also, where can I
 find the softwhere for the 80186 emulator that comes
 with it? Thanks. It is bulky.
 vax, 3900
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