Identification of an HP minicomputer

[Mike Loewen]

    Sorry, I mistyped.  12746A is a 64KB (32KW) memory module.

On Mon, 12 Aug 2019, Guy Sotomayor Jr wrote:

> Except that I don?t have a 12745A memory board, I believe it?s a 12746A which I think I saw was a 16K board.
>
> Thanks.
>
> TTFN - Guy
>
>> On Aug 12, 2019, at 4:07 PM, Mike Loewen via cctalk <cctalk at classiccmp.org> wrote:
>>
>>
>>   2102B is the Standard Performance Memory Controller
>>   12745A is a 64KB (32KW) memory board
>>   12897B is a DCPC (Dual Channel Port Controller)
>>   12992B is a 7905/7906/7920/7925 disc loader PROM
>>   12892B is a Memory Protect board
>>   12944B is the Power Fail Recovery System
>>
>> On Mon, 12 Aug 2019, Guy Sotomayor Jr wrote:
>>
>>> Thanks all!
>>>
>>> The trick was opening up the front panel (I?m used to keylocks that are only electrical and not just physical).
>>>
>>> Here?s the HP label with the options:
>>> CPU 2103
>>> MEM BP 1713
>>> IO BP 1727
>>> Accessories
>>> 12992B
>>> 12944B
>>> 2102B
>>> 12897B
>>> 12892B
>>> 12746A
>>>
>>> In opening the panel on the front card cage, I saw that it only had 16K of memory.  :-(
>>>
>>> I?ll see about firing it up and if that goes well (anyone have suggestions for this type of mini?) I?ll see if I find more memory and suitable peripherals.
>>>
>>> Thanks.
>>>
>>> TTFN - Guy
>>>
>>>
>>>> On Aug 12, 2019, at 3:29 PM, Mike Loewen via cctalk <cctalk at classiccmp.org> wrote:
>>>>
>>>>
>>>>  The original M-Series machines were the 2105A and the 2108A (9-slot), which sound like what you have.  The early machines didn't say "M-Series" on the front panel, and had a different lock than the later models:
>>>>
>>>> http://q7.neurotica.com/Oldtech/HP/2108A/HP2108A-8L.jpg (my model 2108A)
>>>>
>>>>  Early models had the power switch on the back panel, while later models had it behind the front panel.
>>>>
>>>>  It sounds like you might have a later model M. It would be helpful to see a closeup of the read card cage (with readable labels), as well as the front card cage.  The front card cage is accessed by unlocking the panel and removing the cover on the right side over the card cage.  That's where the memory boards live.
>>>>
>>>> On Mon, 12 Aug 2019, Guy Sotomayor Jr via cctalk wrote:
>>>>
>>>>> It?s a 9-slot variant that says HP-1000 M-Series on the front panel.  From what I can tell the front panel appears to be the same as any of the other HP-1000 series.
>>>>>
>>>>> What I?m trying to figure out is what the actual CPU configuration is without disassembly (which I still need to figure out) so that I can actually examine the boards.
>>>>>
>>>>> Thanks.
>>>>>
>>>>> TTFN - Guy
>>>>>
>>>>>> On Aug 12, 2019, at 2:59 PM, Norman Jaffe via cctalk <cctalk at classiccmp.org> wrote:
>>>>>>
>>>>>> Can you provide a picture of the front panel?
>>>>>> 2113 implies a 21MX-E; the nine-slot version is a 2109 while the fourteen-slot would be a 2113.
>>>>>> This might help - https://www.hpmuseum.net/display_item.php?hw=109 .
>>>>>>
>>>>>> From: "cctalk" <cctalk at classiccmp.org>
>>>>>> To: "cctalk" <cctalk at classiccmp.org>
>>>>>> Sent: Monday, August 12, 2019 2:52:18 PM
>>>>>> Subject: Identification of an HP minicomputer
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I have sitting in my pile of stuff an HP minicomputer that I?m trying to identify (at least in terms of exactly what it is and what sort of configuration it might have).
>>>>>>
>>>>>> As far as I can tell, it?s an HP-1000 M-Series minicomputer (that should hopefully get us *some* details). The ?asset tag? lists the part number as 2113023-108. Looking at the back there?s space for 9 I/O cards (5 are occupied).
>>>>>>
>>>>>> So my question is which of the several CPUs could this be and how do I tell (for example) what the configuration is (e.g. how much memory, etc).
>>>>>>
>>>>>> Yes, I have looked on bitsavers, but short of disassembling the box to look at the (at least) 2 boards that are below the I/O slots, I can?t tell what?s there and I?d like to see if there?s a way to determine what this is without resorting to disassembly.
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>> TTFN - Guy
>>>>>
>>>>>
>>>>
>>>> Mike Loewen				mloewen at cpumagic.scol.pa.us
>>>> Old Technology				http://q7.neurotica.com/Oldtech/
>>>
>>>
>>
>> Mike Loewen				mloewen at cpumagic.scol.pa.us
>> Old Technology				http://q7.neurotica.com/Oldtech/
>
>

Mike Loewen				mloewen at cpumagic.scol.pa.us
Old Technology				http://q7.neurotica.com/Oldtech/