Date   

Re: HP-HIL and USB

Kuba Ober
 

You can Likely sample the data using DMA and the clock as a trigger. You’ll be capturing full byte-wise GPIO port, but that way there’s no need to waste time servicing interrupts. I’ve done many clocked interfaces that way on systems that were way too slow to bit-bang the protocol otherwise. Output works the same. Most architectures will be efficient at integrating the byte array and extracting bits. If the packers have reasonably small size, RAM shouldn’t be a concern.

Cheers, Kuba

5 jan. 2020 kl. 4:17 em skrev Sven Schnelle <svens@...>:

Hi,

On Tue, Dec 24, 2019 at 02:08:40AM -0800, Vassilis PREVELAKIS (series80.org) wrote:
Hi Sven,

Yes in my opinion this is the most effective solution as all the HIL hardware is there,

I have been wanting to do something like this for years, but have not found the time to do it so far.
I received the HP HIL identification modules now, and did a quick prototype. It
seems to work. With my HP9000/3xx systems it looks like BASIC/WS is only accepting
keycode set 1 (ITF Keyboard) but not the PC like Keycode set 3. Haven't tried
with with my PA-RISC 9000/715 yet.

My current code (which isn't really finished yet) is here:

https://github.com/svenschnelle/hilps2

I didn't receive the Arduino pro micro yet, so i used the ATmega 2560 Arduino
for now which doesn't fit into the original housing.

A converter with less hardware seems to be possible with STM32 and a software
HIL implementation. These uC's run up to 72MHz internal clock, which i think
would be sufficient to sample the HIL data in an Interrupt routine.

Regards
Sven



Re: HP-HIL and USB

Sven Schnelle <svens@...>
 

Hi,

On Tue, Dec 24, 2019 at 02:08:40AM -0800, Vassilis PREVELAKIS (series80.org) wrote:
Hi Sven,

Yes in my opinion this is the most effective solution as all the HIL hardware is there,

I have been wanting to do something like this for years, but have not found the time to do it so far.
I received the HP HIL identification modules now, and did a quick prototype. It
seems to work. With my HP9000/3xx systems it looks like BASIC/WS is only accepting
keycode set 1 (ITF Keyboard) but not the PC like Keycode set 3. Haven't tried
with with my PA-RISC 9000/715 yet.

My current code (which isn't really finished yet) is here:

https://github.com/svenschnelle/hilps2

I didn't receive the Arduino pro micro yet, so i used the ATmega 2560 Arduino
for now which doesn't fit into the original housing.

A converter with less hardware seems to be possible with STM32 and a software
HIL implementation. These uC's run up to 72MHz internal clock, which i think
would be sufficient to sample the HIL data in an Interrupt routine.

Regards
Sven


Re: Anyone know what capacity the Panasonic FBP-08B24H fan on the HP9816 has?

 

 

If You’re going to use permanent or for long hours you’ll end with a higher internal temperature.

But the fans are designed for an industrial environment with possible high ambient temperatures.

In my opinion and in your climate, I wouldn’t worry about 32 or 23 CFM.

Just don’t operate the computer if the ambient temp is higher as 35C 😊

 

-Rik

 

Van: VintHPcom@groups.io <VintHPcom@groups.io> Namens Anders
Verzonden: zaterdag 4 januari 2020 11:27
Aan: VintHPcom@groups.io
Onderwerp: Re: [VintHPcom] Anyone know what capacity the Panasonic FBP-08B24H fan on the HP9816 has?

 

It now turns out that the 32CFM/36dB fan I installed is a tad loud... Wonder if a 23CFM/20db fan would be acceptable?


Re: Anyone know what capacity the Panasonic FBP-08B24H fan on the HP9816 has?

Anders
 

It now turns out that the 32CFM/36dB fan I installed is a tad loud... Wonder if a 23CFM/20db fan would be acceptable?


Re: SYSTEM ERRO hang on a 9816 when running a BASIC 2.0 program?

Anders
 

I can now report that it must have been memory related as a 4Mb RAM board fixes the problem.


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

Anders
 

Just to clarify: The series 200 came with one of two keyboards, the large 98203 or "Nimitz" keyboard, or the smaller 98203A. There are some good pictures of the latter here:

http://bitsavers.trailing-edge.com/pdf/hp/9000_200/keyboard/98203A/


Re: Using an USB keyboard with the 98xx-series computers

Anders
 

OK. Almost done. Language is selectable through dipswitch or links. Language detection and keyboard repeat now works just fine. Will have to add some code to handle the modern key arrow keys as the 9816 only has two, where shifted is up/down. I am playing with the thought of at least adding space for a PS/2 connector on the PCB in case I or someone else has the time to implement that.


Re: Happy New Year

Anders
 

Ditto everone. I guess we, who are 2hours fast on GMT were among the first. It really feels weird to write 2020..


Re: Happy New Year

Jack Rubin
 

2020 is almost here in Chicago – Happy New Year to All!

Jack

 

From: VintHPcom@groups.io [mailto:VintHPcom@groups.io] On Behalf Of Rik Bos
Sent: Tuesday, December 31, 2019 5:05 PM
To: VintHPcom@groups. io <vinthpcom@groups.io>
Subject: [VintHPcom] Happy New Year

 

From this side of the big pond, everybody a happy new year!

 

-Rik


--
Jack
www.computerarium.org


Happy New Year

 

From this side of the big pond, everybody a happy new year!

-Rik


Re: 98xx international keyboard layouts?

Anders
 

Is it possible that the 9816 only supports US/French/German/Spanish?


Re: 98xx international keyboard layouts?

Anders
 

It is neither simple, nor well-documented. In the Tony Duell schematics the J3 link is open which it is not on my keyboard, but still that bit position is active:


At 1 we have 8 pulses from the rotary encoder. then at 2, J7,6,5,4, J3 off, J2 off then J1, J0 and last the reset pulse from the host. Oddly can I apparently get a German and Spanish layout, but not a Finnish/Swedish one. Must try harder


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