Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!njin!princeton!phoenix!jwbirdsa
From: jwbirdsa@phoenix.Princeton.EDU (James Webster Birdsall)
Newsgroups: comp.sys.ibm.pc
Subject: assorted questions
Keywords: Video addressing & ports, terminal emulation
Message-ID: <5082@phoenix.Princeton.EDU>
Date: 2 Jan 89 01:27:43 GMT
Organization: Princeton University, NJ
Lines: 27


   Three questions:

   1) I need a sophisticated way to determine where the screen begins in
RAM. I have looked in the interrupt list recently posted and didn't find
anything that looked useful. For example, how does Turbo C (which makes
a point of doing direct screen writes for speed) do it?

   2) Saw this posted a while ago but can't find it again... what port
should I watch to avoid snow on the CGA? And am I right in believing
that this problem is limited to the CGA?

   3) Finally, could somebody send me a list of the control codes which
a VT100/102 responds to? (i.e. the codes the host sends to it).

   Thanks a lot...


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! James W. Birdsall               Compu$erve:  71261,1731              !
! jwbirdsa@phoenix.Princeton.EDU  jwbirdsa@bogey.Princeton.EDU         !
! jwbirdsa@pucc.BITNET            ...allegra!princeton!phoenix!jwbirdsa!
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