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Groups > comp.sys.apple2.programmer > #1126

Re: What to pass to srand()?

From Egan Ford <datajerk@gmail.com>
Newsgroups comp.sys.apple2.programmer
Subject Re: What to pass to srand()?
Date 2014-01-19 14:33 -0700
Organization XMission http://xmission.com/
Message-ID <lbhgah$ba2$1@news.xmission.com> (permalink)
References <lbdebg$vce$1@news4.open-news-network.org> <1e96d0ad-4c14-4895-902f-3ada72306581@googlegroups.com> <lbeo68$7l3$1@news4.open-news-network.org> <lbeuuo$tka$1@news.xmission.com> <1680260059411782836.522836mjmahon-aol.com@news.giganews.com>

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On 1/18/14, 5:26 PM, Michael J. Mahon wrote:
> Time to VBL is useful only if some unpredictable time has elapsed since
> boot or reset, since the video generator is started synchronously with the
> processor and is driven from the same clock. (Of course, any user
> interaction will "pause" the running code for an unpredictable time, after
> which a "count until VBL" will have an unpredictable result.)

Is that also the case when booting from disk and running a program from 
disk.  Or is the disk I/O that predictable.

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Thread

What to pass to srand()? Matt <matt@clickertraining.co.nz> - 2014-01-18 21:28 +1300
  Re: What to pass to srand()? Marco Verpelli <mverpelli@libero.it> - 2014-01-18 01:31 -0800
    Re: What to pass to srand()? Matt <matt@clickertraining.co.nz> - 2014-01-19 09:22 +1300
      Re: What to pass to srand()? Egan Ford <datajerk@gmail.com> - 2014-01-18 15:24 -0700
        Re: What to pass to srand()? "Bill Buckels" <bbuckels@mts.net> - 2014-01-18 17:32 -0600
          Re: What to pass to srand()? "Bill Buckels" <bbuckels@mts.net> - 2014-01-18 17:38 -0600
        Re: What to pass to srand()? Michael J. Mahon <mjmahon@aol.com> - 2014-01-18 18:26 -0600
          Re: What to pass to srand()? Egan Ford <datajerk@gmail.com> - 2014-01-19 14:33 -0700
            Re: What to pass to srand()? Michael J. Mahon <mjmahon@aol.com> - 2014-01-19 23:27 -0600
          Re: What to pass to srand()? Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2014-01-20 01:35 +0200
  Re: What to pass to srand()? gids.rs@sasktel.net - 2014-01-18 21:17 -0800
    Re: What to pass to srand()? Michael J. Mahon <mjmahon@aol.com> - 2014-01-19 11:15 -0600
      Re: What to pass to srand()? gids.rs@sasktel.net - 2014-01-19 21:19 -0800
        Re: What to pass to srand()? Michael J. Mahon <mjmahon@aol.com> - 2014-01-20 00:14 -0600

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