Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!jgreco
From: jgreco@csd4.milw.wisc.edu (Joe Greco)
Newsgroups: comp.sys.cbm
Subject: Re: Kermit + Batteries Included 80 column card
Message-ID: <3633@csd4.milw.wisc.edu>
Date: 31 Jul 89 16:49:07 GMT
References: <19113@vax5.CIT.CORNELL.EDU> <4513@merlin.usc.edu> <2387@pur-phy> <4988@max.acs.washington.edu>
Sender: news@csd4.milw.wisc.edu
Reply-To: jgreco@csd4.milw.wisc.edu (Joe Greco)
Organization: UW-Milwaukee Home for Out-of-date 8 bit Hackers
Lines: 17

In comp.sys.cbm article <4988@max.acs.washington.edu>, scott@max.acs.washington.edu wrote:
]And also, I know that having a BI 80 columns cards makes the
]display of the characters in 80 columns mode much clear, but
]how about speed? Is the scrolling of the screen much quicker?

The screen is memory mapped, like the C64's 40 column screen.  The
problem with the hi-res 80 column screen is that there are several
bytes and several calculations needed to move  any given character on
the screen.  With a memory mapped display, this is no longer a problem.

I'm used to *instant* scrolls, and Kermit is a lot more pleasant to
use because of the BI-80.
--
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