Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!hubcap!ncrcae!ncr-sd!serene!pnet12!gbell
From: gbell@pnet12.cts.com (Greg Bell)
Newsgroups: sci.electronics
Subject: CRT vs Video Controller
Message-ID: <914@serene.UUCP>
Date: 6 Sep 89 01:56:05 GMT
Sender: root@serene.UUCP
Organization: People-Net [pnet12], Del Mar, CA
Lines: 28



I'm looking to use my TV as a display for my 8031 microcontroller circuit.  I
know how to take a video signal and modulate it into something the TV can use
(using National's LM1889 or LM2889).   

So, now I need a video generator.  I need something that can take in character
postion/values or whatever, and generate a video output that I can feed into
the modulator.  Need not have color/sound etc.  

The only chip I've looked at so far is Intel's 8745 CRT controller.  But, this
, as it says, is a CRT controller and doesn't seem to output video readily...
or am I missing something?

Are the other CRT controllers (6845 etc) able to generate a composite video
signal?  Is it a composite signal that I need to modulate for the TV????


Please E-Mail me any responses and I will summarize and post the answers...


PS.  Can somebody E-Mail me the recent discussion on digitizing voice using
     1-bit circuits?

    Greg Bell_________________________________________________________
      Hardware hacker          |
      Electronics hobbyist     | UUCP:  uunet!serene!pnet12!gbell
      EE major at UC San Diego |