Jump to content
Kamelie1706

strange atari 260st .... keyboard only?

Recommended Posts

Posted (edited)

Hi

 

has anyone any idea what this is?

 

I did not yet dismantle it fully but did not find much yet … seems only the keyboard !?

 

from eBay Germany…

 

i have never heard of a 260st with a separated keyboard. It does not look either as a mega st/ste keyboard from what I understand the connection on the back …🤔

 

 

 

F864DE15-F1FA-4867-9641-F5D86B0E5312.jpeg

4AF4673B-6678-40F4-8DDA-87FF85091FBC.jpeg

E5C8CE6D-6645-45EA-BBF0-CE075FBCFBAE.jpeg

8E024A15-6015-49FF-82F9-EC688265F1C3.jpeg

Edited by Kamelie1706

Share this post


Link to post
Share on other sites

I remember early magazine articles, before the ST's actual release, that Atari has shown 260STs and were planning its release, but it was cut from the lineup when chip prices fell before full release.  

Share this post


Link to post
Share on other sites

That picture of the ports definitely doesn't look fresh from the factory. It also doesn't look homemade or modded though. I wonder if this could be a mockup or a prototype?

 

Share this post


Link to post
Share on other sites
Posted (edited)

I was indeed thinking about a prototype for the same reasons!


The round/din connection next to mouse/joystick port has 5 pins and a cable extender was included. I wonder what it could be for? I need to dismantle the keyboard to see what is on the back … maybe a surprise!

 

Edited by Kamelie1706

Share this post


Link to post
Share on other sites
Posted (edited)

The din 5 pin matches physically the midi port … but must be something else.

 

any record of Atari keyboard having 5 pin din connector? 
 

i first thought some kind of AV connection like on 8 bits series but must get the power from somewhere 🤔

Edited by Kamelie1706

Share this post


Link to post
Share on other sites

Looks something like a "DeskTopper" case, where the keyboard from the original ST

is taken out and the case is covered with an enlarged top. I had one for a while that

I used with a Falcon. Pretty nice actually.

 

Capture.JPG.ad0ea02f1595d2430e39a1d79fce25fb.JPG

  • Like 1

Share this post


Link to post
Share on other sites
13 hours ago, Kamelie1706 said:

Ideally I would like to use this keyboard to master a mega ST4 I am restoring.

 

Any adapter available din5=>6pinRJ12 normal Mega connection?

I can also make one but would need schema for connection

 

Found  a compiled information here but not coverring the standard 5pinDin connection

https://www.exxoshost.co.uk/forum/viewtopic.php?t=1346

 

That's the Freekeys keyboard that came with the DeskTopper as DarkLord mentioned (see Toad Computers ad below from 1995/96).  Is there any way to check which wires from the keyboard are running to the DIN connector?   You could also bypass the DIN and solder the ends of the RJ12 directly to the mount on the Freekeys.

DeskTopper96.png

Share this post


Link to post
Share on other sites

Should be possible to at least identify color wire cables continuity at this level … unless some connections include “logical gate” which activate only with power.

 

Sorry if I say dummy things … still need to upgrade massively my basic electronic knowledge!

 

 

490CCE04-2F90-4DB8-86A8-345FBA321671.jpeg

  • Like 1

Share this post


Link to post
Share on other sites
On 8/25/2021 at 6:36 PM, gilsaluki said:

I remember early magazine articles, before the ST's actual release, that Atari has shown 260STs and were planning its release, but it was cut from the lineup when chip prices fell before full release.  

260STs were sold in Europe in low numbers IIRC

Share this post


Link to post
Share on other sites

Here is the continuity report.

I number the din pin from left to right based on the picture 

 

1 - brown right

2 - red right

3 - orange right

4 - no continuity found

5 - black left

 

Does it sound about right to you?

 

is there a different purpose of for the 2 serial ports as they do not seem map the same way with the din?

 

 

E03A8A4F-A0C5-4977-9C6B-A736C54732EB.jpeg

Share this post


Link to post
Share on other sites

The two 9-pin d-sub connector is for mouse/joystick. The keyboard controller chip is located underneath the keyboard and handles the mouse/joy. So they just relocated them for easy access. Mouse has two buttons but Atari only uses 1 button per port so right button on mouse is the same as fire on joystick port.

 

The 5-pin DIN probably has 5V, Ground, Transmit data, Receive data and Reset from the main board. Reset can be omitted since it can be made on the keyboard with some small circuit.

Edited by snarkdluG
  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...