Date   

Keycaps, keyswitches from 9816,26,36, 98203B

Theo Stevens
 

 

Due to the increased traffic concerning searches for keyboards, keycaps and keyswitches  from 98203B/C 9816,26,36 I like to inform you that I have about 7 x 98203B cannibalized keyboards

having missing keys , keycaps and or switches.

 

The following list represents the HP keycap numbers used on the 98203, 9816,26,36 keyboard pictures as attached. The listed numbers are available in qty 2 each new originally packed from HP

The other keycaps  from the keyboards are available also . The needed keyswitches will be soldered out.

 

Pls contact me off-list in case there is a need

 

0371-2294

0371-2283

0371-2292

0371-2290

0371-2284

0371-2268

0371-2298

0371-2270

0371-2281

0371-2282

0371-2293

0371-2300

0371-2286

0371-2289

0371-2271

0371-2279

0371-2288

0371-2291

0371-2299

0371-2278

0371-2512

0371-2269

0371-2266

 

 

Theo Stevens

 

 


Re: HP 9826A - still need replacement key body

Paul Berger
 

All of the 9825 and 9835 keyboards I have seen have key switches that are either marked with the Cherry name or look very much like them  I have also seen Cherry keyboards  in 4972A protocol analyzers which is largely a 9920 fitted into a transportable case.  I have seen other similar instruments from that time period that also used Cherry keyboards.

Paul.

On 2019-12-28 8:43 p.m., Lee A. White via Groups.Io wrote:
I did not work no the 9826, but most of the key switches I did work with were manufactured by Cherry.

--------------------------------------------------
From: "Guy Dunphy" <@TerraHertz>
Sent: Saturday, December 28, 2019 11:37 AM
To: <VintHPcom@groups.io>
Subject: Re: [VintHPcom] HP 9826A - still need replacement key body

At 02:34 AM 28/12/2019 -0800, Anders wrote:
Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.
If it's any help, here's a photo of the bottom of the keyswitch.
It has "Maxi" molded in. Presumably the name of the manufacturer.
No part number on the switch that I can see.

Guy





Re: HP 9826A - still need replacement key body

Lee A. White
 

I did not work no the 9826, but most of the key switches I did work with were manufactured by Cherry.

--------------------------------------------------
From: "Guy Dunphy" <@TerraHertz>
Sent: Saturday, December 28, 2019 11:37 AM
To: <VintHPcom@groups.io>
Subject: Re: [VintHPcom] HP 9826A - still need replacement key body

At 02:34 AM 28/12/2019 -0800, Anders wrote:
Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.
If it's any help, here's a photo of the bottom of the keyswitch.
It has "Maxi" molded in. Presumably the name of the manufacturer.
No part number on the switch that I can see.

Guy




Re: 98xx international keyboard layouts?

Anders
 

The decoding works like this. Pulses are counted and fed to an one out of 16 decoder which controls 16 8-input analogue muxes. Mux 0 has input 2 to the shift keys, 3 to the Ctrl key, hence shift is pulling data low after 2 pulses, Ctrl after three etc.

The config links is connected to the last mux so J7 is the 120th pulse, J6 is the 121th pulse etc.

Let me try that tomorrow.


Re: 98xx international keyboard layouts?

Anders
 

Wel number 2 gave me Spanish, but there is no point changing this keyboard as it has US keytops, but for my emulator, it would be nice to be able to use the layout you are accustomed to. Anyway. The config word is read once, at bootup. It is at "column" 15, the last colum (encoder is 14).

At reset, the computer sends a bunch, I assume 256 clock pulses at a higher frequency than normally (24us) so it counts all the way to column 15 and reads the word. After that it lowers the keyboard clock and never counts past 140-something.

I shall see how I can emulate this.


Re: HP 9826A - still need replacement key body

Paul Berger
 

On 2019-12-28 12:39 p.m., Dave McGuire wrote:
On 12/28/19 11:37 AM, Guy Dunphy wrote:
Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.
If it's any help, here's a photo of the bottom of the keyswitch.
It has "Maxi" molded in. Presumably the name of the manufacturer.
No part number on the switch that I can see.
Maxi-Switch, yes. They made nice key switches.

-Dave
The Maxi-Switch keyboards are pretty nice, but the plastic that was used for the key stems is getting brittle and it is pretty easy to break off a key.  I have a 98203B and a 98203C both of which where built by Maxi-Switch as where at least some of the 9826/36 keyboards.

Paul.


Re: 98xx international keyboard layouts?

Paul Berger
 

Yes I think it will take trial and error removing one at a time and checking the result my guess would be J2 will give you Swedish/Finnish.  It would be nice if there where diagrams with the layouts, but I cannot find any.

Paul.

On 2019-12-28 12:24 p.m., Anders wrote:
On Sat, Dec 28, 2019 at 04:48 PM, Paul Berger wrote:
98203A
You are right! I never noticed those or simply assumed that they were links because they could not route all tracks. My keyboard has all the links in place. SW/F is presumably Swedish/Finnish so I will have to figure out how to emulate that :)

The row and colum numbers in that illustration do not correspond to the 9816 schematic though. For example, Z is column 7 in the schematic and I see a code 2 for shift and 3 for control, 26 is A etc. The number being the number of clockpulses counted from start.


Re: HP 9826A - still need replacement key body

Dave McGuire
 

On 12/28/19 11:37 AM, Guy Dunphy wrote:
Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.
If it's any help, here's a photo of the bottom of the keyswitch.
It has "Maxi" molded in. Presumably the name of the manufacturer.
No part number on the switch that I can see.
Maxi-Switch, yes. They made nice key switches.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


Re: HP 9826A - still need replacement key body

Guy Dunphy
 

At 02:34 AM 28/12/2019 -0800, Anders wrote:
Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.
If it's any help, here's a photo of the bottom of the keyswitch.
It has "Maxi" molded in. Presumably the name of the manufacturer.
No part number on the switch that I can see.

Guy


Re: 98xx international keyboard layouts?

Anders
 

On Sat, Dec 28, 2019 at 04:48 PM, Paul Berger wrote:
98203A
You are right! I never noticed those or simply assumed that they were links because they could not route all tracks. My keyboard has all the links in place. SW/F is presumably Swedish/Finnish so I will have to figure out how to emulate that :)

The row and colum numbers in that illustration do not correspond to the 9816 schematic though. For example, Z is column 7 in the schematic and I see a code 2 for shift and 3 for control, 26 is A etc. The number being the number of clockpulses counted from start.


Re: 98xx international keyboard layouts?

Paul Berger
 

The 98203A has 8 jumpers along the left side of the keyboard PCB that can be read by the system, which Tony labeled as "Config Links" on his schematic.  My US English 98203A has all 8 jumpers in place.   Page 9-5 of the CE handbook for 9826/36 may offer a clue to the jumpers, the absence of a jumper would appear to select the language and of course there would be different keytops for some of the keys as well.  

Paul.

On 2019-12-28 6:38 a.m., Anders wrote:
The docs hint that the 98xx was sold with different keyboard layouts for different European countries, but I have not found any info on how this internationalisation was done, ie is there any way to change the keyboard layout in software, or is it burnt into the boot rom?


Re: Serial terminal emulation for HP 1000

Colin Eby
 

Thanks Marc.

I think the first problem is getting the basic serial connection working. There are quite  number of cabling variations. From memory there was something unusual about the ready signalling you needed to account for.

The 2640 series is covered in the extended ncurses packages on linux, so that can be leveraged. In a pinch I could put in a serial switch box to allow for tape processing, and still use the 2645 as the console. 

Has anyone else actually connected a PC to an HP 1000. I'm thinking they must have. If there are any considerations I oughta watch out for, please let me know.

-Colin

On Sat, 28 Dec 2019, 01:52 CuriousMarc, <marc.verdiell@...> wrote:
Tapes should be quite straightforward. The HP2645 are well documented. The tape drives are just plain sequential records of characters or keystrokes. No file structure, no directory, nothing added or removed. Playing macros back should work.
If you want to correctly implement a 2645  emulation though you’ll have to implement the escape sequences, of which there are many. Also the many modes (block, edit, function keys, fields, highlights, special fonts). Also the very many comm cards and keyboard card strapping options, in particular the ones that deal with handshake modes. All very straightforward and well documented though, but quite a bit of work.
There is a down-to-the-processor code exact emulation in MAME already in existence. Runs the original ROM code!
Marc


98xx international keyboard layouts?

Anders
 

The docs hint that the 98xx was sold with different keyboard layouts for different European countries, but I have not found any info on how this internationalisation was done, ie is there any way to change the keyboard layout in software, or is it burnt into the boot rom?


Re: HP 9826A - still need replacement key body

Anders
 

Glad to hear. If you ever find the HP Sparepart number of manufacturer number, then please post it.


Re: Serial terminal emulation for HP 1000

 

Tapes should be quite straightforward. The HP2645 are well documented. The tape drives are just plain sequential records of characters or keystrokes. No file structure, no directory, nothing added or removed. Playing macros back should work.
If you want to correctly implement a 2645  emulation though you’ll have to implement the escape sequences, of which there are many. Also the many modes (block, edit, function keys, fields, highlights, special fonts). Also the very many comm cards and keyboard card strapping options, in particular the ones that deal with handshake modes. All very straightforward and well documented though, but quite a bit of work.
There is a down-to-the-processor code exact emulation in MAME already in existence. Runs the original ROM code!
Marc


HP 9826A - still need replacement key body

Guy Dunphy
 

The search for a replacement key switch for my 9826A (9000-226) is sorted.
Assuming they don't get lost in the post somehow.

Thanks! This list is such a great resource.

Guy


Re: HP 9915a coprocessor

HP75_8687
 

Hello Dave,
thank you for the update! Without the firmware image from the 8048, I won't have a chance to repair my 9915.
I didn't open the chassis by myself, but if you like I can ask my technician if there is some trick.
The service manual for the 9915 should be helpful as well, it is available online (at HPMuseum.net).
- Michael


Re: Serial terminal emulation for HP 1000

Jack Rubin
 

What a great project for 2020!

Sorry I can’t add anything but encouragement, but it would be a very useful item to have. I’d like to use it with my 2116C for diagnosis and eventually RTE (II) as well.

Best wishes for success.

--
Jack
www.computerarium.org


Re: HP 9915a coprocessor

Dave McGuire
 

Hey Mike Fehlhammer, I just received a bounce message from a private
email that I sent to you a month ago, apparently your mail server
doesn't want to have anything to do with mine. Let's keep this in mind
and for the time being we should probably just communicate here.

Anyway, I've still not pulled that 8048; things are busy here. But I
will get to it. The big obstacle is tearing the chassis apart; it's one
of HP's more "elaborate" enclosure designs. ;) (meaning: what were they
smoking?) It's not a standard "System II" enclosure, though it
resembles one from the outside.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


Serial terminal emulation for HP 1000

Colin Eby
 

Hi & happy holidays,

I wondered if anyone had a cheat sheet for using a standard USB serial adapter to connect a PC as the console for a HP1000E. I can see where there are going to be some gotchas. I had in mind being able to emulate the tape drives as well by intercepting the escape sequences.

Before setting off on this trek, I thought I'd see if the hive mind had some pointers to offer. I'll be using the BACI card  and working up to running RTE over HP Drive. But I wanted to start by just getting a fully functional console with minitape functionality so I could run tape based utilities.  I do have a slightly moody 2645a, but fixing the tape drives would be their own saga, and I wouldn't have a good way to master tapes for them anyway.

Thoughts,  pointers, storm warnings?

-Colin