Groups > comp.sys.apple2.programmer > #312

Re: VBL duration?

From	aiiadict@gmail.com
Newsgroups	comp.sys.apple2.programmer
Subject	Re: VBL duration?
Date	2012-06-28 06:59 -0700
Organization	http://groups.google.com
Message-ID	<aba20a92-d977-446c-a057-baf5aea38de9@googlegroups.com> (permalink)
References	<jsf60j$dp$1@news.xmission.com>

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http://rich12345.tripod.com/aiivideo/vbl.html

On Wednesday, June 27, 2012 7:40:19 AM UTC-7, datajerk wrote:
> Programmers,
> 
> For an NTSC IIe what is the duration of the vertical blanking interval?
> 
> Thanks.

http://rich12345.tripod.com/aiivideo/vbl.html


70 scanlines * 65 cycles = 4550 cpu cycles


Rich

On Wednesday, June 27, 2012 7:40:19 AM UTC-7, datajerk wrote:
> Programmers,
> 
> For an NTSC IIe what is the duration of the vertical blanking interval?
> 
> Thanks.

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Thread

VBL duration? Egan Ford <datajerk@gmail.com> - 2012-06-27 08:40 -0600
  Re: VBL duration? Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2012-06-28 09:58 +0300
  Re: VBL duration? aiiadict@gmail.com - 2012-06-28 06:59 -0700
    Re: VBL duration? Egan Ford <datajerk@gmail.com> - 2012-06-28 09:48 -0600
      Re: VBL duration? Gary Gray <vengefultacos@gmail.com> - 2012-06-29 17:10 -0400
        Re: VBL duration? aiiadict@gmail.com - 2012-06-29 15:58 -0700
          Re: VBL duration? aiiadict@gmail.com - 2012-06-29 16:00 -0700

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