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- Path: sparky!uunet!auspex-gw!guy
- From: guy@Auspex.COM (Guy Harris)
- Newsgroups: comp.arch
- Subject: Re: BUSES and other things
- Message-ID: <13749@auspex-gw.auspex.com>
- Date: 26 Jul 92 20:31:46 GMT
- References: <55077@mentor.cc.purdue.edu> <13742@auspex-gw.auspex.com> <55118@mentor.cc.purdue.edu>
- Sender: news@auspex-gw.auspex.com
- Organization: Auspex Systems, Santa Clara
- Lines: 88
- Nntp-Posting-Host: bootme.auspex.com
-
- >>...because the hardware doesn't know beans about characters; the
- >>software can turn pixels on and off as it chooses. It's the *software*
- >>that's responsible for having the characters available.
- >
- >At what speeds,
-
- Fast enough for my purposes; dunno how fast you require them to be. For
- example, when I fired up the Andrew Toolkit "eq" editor, and asked it to
- insert an integral sign, the sign popped up quite quickly.
-
- It took some time to tell it to do so, as I just selected the "Insert
- Symbol" item from the menu, and typed "int" to its prompt. There may
- well be faster ways of getting it to do so - but, even if there aren't,
- that has nothing whatsoever to do with the desktop bus; it has to do
- with the user interface design of the editor.
-
- >and with how large a source file?
-
- The only effect that the size of the source file has on how fast the
- display can turn a "this is an integral sign" entry in the document into
- an integral sign on the screen is that a larger source file *might*
- increase the working set size of the editor, and thus *might* cause
- pages containing e.g. code to paint the integral sign to be paged out.
- Both of those are "might"s; the editor might well keep only enough of
- the file to paint the current screen in memory at any given time, for
- example.
-
- >>(And if you're going to argue that "bitmapped displays are the wrong
- >>answer", you'll have to explain why your favorite solution is better;
- >>I'm sure not going to simply take your word for it....)
- >
- >Now I am not quite sure how much is software and how much is hardware;
- >I suspect that it varies considerably between machines.
-
- I suspect that the most that modern machines have in the way of
- "hardware assist" for that is hardware to copy bit-mapped images of
- characters from one place in memory to another. I believe some
- hardware "PostScript accelerators" of some sort have been cooked up for
- laser printers; they may show up as window system accelerators, and if
- they transform scalable representations of characters into bitmaps, that
- form of "hardware assist" may show up in future machines.
-
- >But I would
- >prefer a dumb terminal with a downloadable character set of size 2^10,
- >and which is easily user-modifiable, to the clumsiness of something
- >like TeX.
-
- What if the only software you have that supports the creation of papers
- with mathematical formulae in them, and that uses that dumb terminal,
- *IS* TeX?
-
- If it's truly a "dumb terminal", it will not, by itself, allow you to
- edit documents; you'll need host software to do that. And even if it
- *does* have a 1024-character character set, that doesn't *necessarily*
- mean that you'll get any software for it other than, say, a TeX
- previewer.
-
- A conceivable - although not necessarily likely - scenario is that you
- get an editor that you find less clumsy than a plain-text editor + TeX
- running on a machine with a bitmapped display, and naught but a TeX
- previewer on your terminal....
-
- I.e., you're confusing the issue of the capabilities of your display
- hardware with the capabilities of the editing software. To confuse them
- in that fashion is unwise; it can lead to conclusions that may not be
- valid, e.g. that a dumb terminal with a large downloadable character set
- is more likely to give you a document preparation facility for
- mathematical papers that you will find preferable to TeX than is a
- system with a bitmapped display.
-
- >And I want an easily readable source file, not like those
- >clumsy messes on the Macs.
-
- I rather doubt that the display hardware will have much, if any, effect
- on the source file format. If you wish to complain about the current
- state of software for the preparation of mathematical papers, you will
- probably find it much more productive to do so in, say, "comp.editors",
- or one of the "comp.doc" groups, than here, unless you can demonstrate a
- way in which computer system architecture is directly responsible for
- that state.
-
- (Or, to put it another way, the fact that the Mac has a bitmapped
- display has, as yet, not been demonstrated to have had any effect
- whatsoever on the format of the source file used by the
- document-preparation software you've used, so if your reasoning is
- "well, all these systems with bitmapped displays do not meet with my
- approval, therefore bitmapped displays are bad", then, unless you have
- some data you haven't shown us all yet, your reasoning is bogus....)
-