Jump to content


Communicate without RS-232

29 replies to this topic



    River Patroller

  • 3,600 posts
  • Location:Vancouver, Washington, USA

Posted Tue Feb 12, 2019 10:55 PM

I only suggested the CASSETTE port as this could be added to a single console for input and output to other devices besides just SERIAL like JOYPORT.


I was thinking instead of Cassette to send it to a device chip instead thus work like Disk Drive storage. 


CS1 would be READ/WRITE and CS2 would be READ only. And they could be on same device with single toggle of on or off READ/WRITE

#27 Ksarul OFFLINE  



  • 5,318 posts

Posted Fri Feb 22, 2019 10:09 AM

And back to Arcadeshopper's comment on the existence of IEEE-488 cards, there are probably about 20-30 of them in circulation. I have a pair of them that I plan to use to interface a pair of TI computers to an IEEE disk drive at some point. . .I also have about 20 of the required TMS-9914s, so I could probably build some new ones on a Protoboard at some point too. . .I just have to test to see if the PALs are locked or not, as I don't think I have a complete description of the JEDEC equations for it.



    Star Raider

  • 59 posts
  • Location:California

Posted Fri Feb 22, 2019 4:54 PM

Here was a hair-brained idea from back in the 80's.  Thought maybe using a DSR space and breaking out CRU bits might be cool, never finished it. 


Attached File  20190222_140146-3.jpg   1.21MB   0 downloads



Maybe I was thinking I could control the lights in our apartment or something..... :-)

#29 Opry99er OFFLINE  



  • 10,744 posts
  • Location:Hustisford, WI

Posted Fri Feb 22, 2019 7:30 PM





  • 435 posts
  • Location:"trapped in interspace"

Posted Fri Feb 22, 2019 7:38 PM

I agree... definitely hair-brained...


I did the same thing... the schematics are on faded thermal paper...


Attached File  Olden way.JPG   316.14KB   0 downloads


Mine was stand alone, using tone decoders driven by the sound generator...

Abo. 106 outputs.

0 user(s) are browsing this forum

0 members, 0 guests, 0 anonymous users