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- Path: sparky!uunet!wupost!waikato.ac.nz!comp.vuw.ac.nz!animal!lchiu
- Newsgroups: comp.dcom.modems
- Subject: Re: V32bis with V42bis Screen Updates
- Message-ID: <Bs7zzp.HFv@animal.gcs.co.nz>
- From: lchiu@animal.gcs.co.nz (Laurence Chiu)
- Date: Thu, 30 Jul 1992 21:06:59 GMT
- References: <Bs6DCo.F4n@animal.gcs.co.nz> <15852nINN2fd@matt.ksu.ksu.edu> <Bs70H5.EuL@pgroup.com>
- Organization: GCS Limited, Wellington, New Zealand
- Keywords: V32bis V42bis
- Lines: 27
-
- In article <Bs70H5.EuL@pgroup.com> lfm@pgroup.com (Larry Meadows) writes:
- >Dumb calculation regarding screen update:
- >
- >Let's see... 80x24 = 1920. At 9600 bps, with zero overhead, you should
- >get 9600/8 = 1200 cps. So a screen will take 1920/1200 = 1.60 seconds.
- >If you really get 4-1 compression, a screen will take 0.40 seconds. So
- >I guess I don't really consider that blindingly fast -- takes you 4 seconds
- >to page through a 240 line article, absolute best case.
- >
- >My Worldblazer to T+ connection, which tells me it is talking at 18k bps,
- >appears to take about 1.2 seconds to refresh this screen. That sort of
- >seems in the ballpark, considering all the variables.
- >
- >Seems like interactive response is a difficult thing to judge.
- >--
- >Larry Meadows The Portland Group
- >lfm@pgroup.com
-
- You're probably right here. And often I turn on ANSI graphics so a screen
- is more than 1920, probably a factor of 30-40% more depending on how
- fancy the BBS is painting the screen. So I guess I should not complain
- since at least I can get 1600+cps on downloads and connect to most
- anything out there which is more than many people in this group seem to
- be doing with their new V32bis modems.
-
- Laurence Chiu
-
-