RE: HP 2640 character set generation manual in the UK

[Jay West via cctalk]

And FYI... bitsavers is mirrored multiple places, so if it is at bitsavers, 
it's already got multiple sources.

Re: HP 2640 character set generation manual in the UK

[David Collins via cctalk]

I’ll put it on www.hpmuseum.net as well so we have at least 2 sources...thanks 
for doing this!

David Collins

Sent from my iPad

> On 10 Nov 2017, at 1:29 am, Christian Corti via cctalk 
>  wrote:
> 
> The manual has been scanned and is on our FTP server:
> ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2648/13245-90001_2640SeriesCharacterSetGeneration_Oct1975.pdf
> 
> Enjoy :-)
> 
> @Al: you may push it to bitsavers
> 
> Christian

RE: HP 2640 character set generation manual in the UK

[Dave Wade via cctalk]

Of course I looked at this in a browser and the ftp server does not like the
re-connects so whats the timer set to?

Dave

> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Ed via
> cctalk
> Sent: 09 November 2017 15:41
> To: c...@informatik.uni-stuttgart.de; cctalk@classiccmp.org
> Subject: Re: HP 2640 character set generation manual in the UK
> 
> Many Thanks  for this.
> A useful addition to our  HP  docs here.
> 
> Ed#  _www.smecc.org_ (http://www.smecc.org)
> 
> 
> In a message dated 11/9/2017 7:29:40 A.M. US Mountain Standard Time,
> cctalk@classiccmp.org writes:
> 
> The  manual has been scanned and is on our FTP  server:
> ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2648/13245-
> 90001_2640S
> eriesCharacterSetGeneration_Oct1975.pdf
> 
> Enjoy  :-)
> 
> @Al: you may push it to  bitsavers
> 
> Christian

Re: HP 2640 character set generation manual in the UK

[Ed via cctalk]

Many Thanks  for this. 
A useful addition to our  HP  docs here.
 
Ed#  _www.smecc.org_ (http://www.smecc.org)  
 
 
In a message dated 11/9/2017 7:29:40 A.M. US Mountain Standard Time,  
cctalk@classiccmp.org writes:

The  manual has been scanned and is on our FTP  server:
ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2648/13245-90001_2640S
eriesCharacterSetGeneration_Oct1975.pdf

Enjoy  :-)

@Al: you may push it to  bitsavers

Christian

Re: HP 2640 character set generation manual in the UK

[Christian Corti via cctalk]

On Thu, 9 Nov 2017, Mattis Lind wrote:

Very interesting! I have a 2640 which I recently refurbished the screen on
and it runs happily and then a 2645 that still needs treatment for the
screen rot. Is the binaries for pong and space invaders downloadable
somewhere? I searched the usual places, but haven't found anything. It
would be interesting to test this binary download mode.


Sure, the files are on our FTP server:
ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2644 and .../hp2648

Christian

RE: HP 2640 character set generation manual in the UK

[Christian Corti via cctalk]

The manual has been scanned and is on our FTP server:
ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2648/13245-90001_2640SeriesCharacterSetGeneration_Oct1975.pdf

Enjoy :-)

@Al: you may push it to bitsavers

Christian

Re: HP 2640 character set generation manual in the UK

[Mattis Lind via cctalk]

2017-11-09 10:55 GMT+01:00 Christian Corti via cctalk :

> On Wed, 8 Nov 2017, CuriousMarc wrote:
>
>> Awesome! The microcode listings would be fantastic too, as I also have a
>> 2749 (which you are supposed to be able to program in assembly)! Let us
>> know
>>
>
> The firmware is already on bitsavers, IIRC. But you can program every 264x
> terminal in assembly. There are some games like Pong, Space Invaders etc.
> for these terminals, both for the i8008 based 2640/2644 and the i8080 based
> 2645/2648. These terminals all have a special control code sequence to load
> a binary file (either from tape or from the serial line) into memory and
> start executing. It is " & b".
> A short description and sample program for the 8008 based terminals can be
> found here:
> http://computermuseum.informatik.uni-stuttgart.de/dev_en/hp2644/diag.html



Very interesting! I have a 2640 which I recently refurbished the screen on
and it runs happily and then a 2645 that still needs treatment for the
screen rot. Is the binaries for pong and space invaders downloadable
somewhere? I searched the usual places, but haven't found anything. It
would be interesting to test this binary download mode.



>
>
> Christian
>

/Mattis

BBS'ing and early discussions.

[jim stephens via cctalk]

I wonder if there is any better archive of the original DejaNews and 
peoples personal archives than Google Groups.


When the Google Groups took over I know a lot of stuff I had 
participated in was dropped for not reason from Googles take on the 
import of data.


And the BBSs I used were generally participating in such discussions as 
technical ones on hardware and the like, and went directly in some cases 
to usenet discussions as that became available.


I'd be interested in hearing recollections.  I'd not recalled DejaNews 
in a long time.


Main reason is this weeks Minix kerfuffle in the press.  I exchanged 
emails and comments with Tanenbaum when he published the system in his 
original book.  I don't have any info around at hand to look at what I 
did beside run it, but one of my main interests in any platform at that 
time was to be able to compile the system on itself.


thanks
Jim

RE: HP 2640 character set generation manual in the UK

[Christian Corti via cctalk]

On Wed, 8 Nov 2017, CuriousMarc wrote:

Awesome! The microcode listings would be fantastic too, as I also have a
2749 (which you are supposed to be able to program in assembly)! Let us know


The firmware is already on bitsavers, IIRC. But you can program every 264x 
terminal in assembly. There are some games like Pong, Space Invaders etc. 
for these terminals, both for the i8008 based 2640/2644 and the i8080 
based 2645/2648. These terminals all have a special control code sequence 
to load a binary file (either from tape or from the serial line) into 
memory and start executing. It is " & b".
A short description and sample program for the 8008 based terminals can 
be found here:

http://computermuseum.informatik.uni-stuttgart.de/dev_en/hp2644/diag.html

Christian

[no subject]

[Eric Smith via cctalk]

My first FPGA-Elf (2009) used an FPGA board that is long-since obsolete,
and while I updated it last year, it used an FPGA board that was not
commercially available, and would have been frighteningly expensive if it
was. For the most recent RetroChallenge, I updated the FPGA-Elf to work on
a readily-available, inexpensive FPGA module, the Digilent CMOD-A7-35T,
which is available for $89.  (It can also be made to work on the $75
CMOD-A7-15T, but I recommend the -35T as it can provide more RAM.)  As part
of the RetroChallenge, I added emulation of the CDP1861 PIXIE graphics.
Various photos can be seen at:
https://www.flickr.com/photos/22368471@N04/albums/72157687136287141

The project progress is described, in reverse chronological order, on my
blog:

http://whats.all.this.brouhaha.com/category/computing/retrocomputing/retrochallenge/

I designed a base PCB into which the which the CMOD-A7 module plugs. The
base board provides for use of hexadecimal displays (either HP or TI) for
data and (optional) address, a connector for the switches, a serial port, a
composite video ports, and an optional MicroSD breakout board.  A 5V 2A
regulated wall-wart provides power.

There are a few issues with the board design requiring a few traces cut and
jumpers and resistors added, and I haven't yet written any software to deal
with the MicroSD card.  I plan to have a new revision of the main board
made to correct the known issues. The switch PCB and bezel PCB don't need
another revision.

I still need to write some documentation, but I've put the rev 0 main board
Eagle files, Gerber files, and PDF files of the schematic and layout at:

http://www.frobco.com/e1000/

I'm willing to make bare boards available for those who want to build their
own.

This version runs at 256x the speed of a normal Elf w/ PIXIE. It's clocked
at 56.34 MHz, but it executes all instructions in one-eighth the clock
cycles required by an 1802. My 1861 implementation uses a dual-port RAM to
allow the CPU to run fast while still producing normal NTSC-rate video.  I
plan to make the processor speed configurable to 1x or 256x, with perhaps a
few intermediate choices.