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Groups > comp.os.msdos.misc > #351

Re: Which newsgroup to discuss details of serial-port programming?

From DOS Guy <DOS@Guy.com>
Newsgroups comp.os.msdos.misc, alt.msdos.programmer, comp.os.msdos.programmer
Subject Re: Which newsgroup to discuss details of serial-port programming?
Date 2012-02-08 21:38 -0500
Organization Aioe.org NNTP Server
Message-ID <4F3331BA.DB28243F@Guy.com> (permalink)
References <4F31C4B5.E3E5B364@Guy.com> <4F327A82.EE0D3C75@Guy.com> <4F3286B7.95B93D5F@Guy.com> <1f6f86f1-cfb9-4ea8-8292-db9e5fcd33be@18g2000yqe.googlegroups.com>

Cross-posted to 3 groups.

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Jim Leonard wrote:

> Is the information in 
> http://courses.engr.illinois.edu/ece390/resources/serial.html
> any help?  Specifically the section starting with "Why and how to use
> the FIFOs"?

I had a look at that document, and to be honest - no.

There is a lot of talk in these various guides and documents about the
history and development of these uarts, the bugs and how they were
corrected, etc. 

But none of that is of any use when the hardware you're working with
doesn't actually contain discrete uart chips so you don't know if you're
working with a 16550 or 16650.

Beyond that, I haven't come across any document that mentions the timing
contraints when you're sending data to a uart to fill the TX fifo.

One would think that if you're starting with an empty fifo, that you can
blast 16 bytes to the uart without needing to monitor anything.

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Thread

Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-07 19:41 -0500
  Re: Which newsgroup to discuss details of serial-port programming? pete@nospam.demon.co.uk - 2012-02-08 07:13 +0000
  Re: Which newsgroup to discuss details of serial-port programming? "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-02-08 03:12 -0500
  Re: Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-08 08:37 -0500
    Re: Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-08 09:29 -0500
      Re: Which newsgroup to discuss details of serial-port programming? Jim Leonard <mobygamer@gmail.com> - 2012-02-08 07:20 -0800
        Re: Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-08 21:38 -0500
          Re: Which newsgroup to discuss details of serial-port programming? "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-02-09 02:16 -0500
    Re: Which newsgroup to discuss details of serial-port programming? pete@nospam.demon.co.uk - 2012-02-08 18:55 +0000
      Re: Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-08 22:12 -0500
        Re: Which newsgroup to discuss details of serial-port programming? Jim Leonard <mobygamer@gmail.com> - 2012-02-09 07:23 -0800
          Re: Which newsgroup to discuss details of serial-port programming? DOS Guy <DOS@Guy.com> - 2012-02-09 19:57 -0500
            Re: Which newsgroup to discuss details of serial-port programming? Jim Leonard <mobygamer@gmail.com> - 2012-02-10 07:13 -0800

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