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- TidBITS#106/10-Feb-92
- =====================
-
- Infojunkies rejoice! As a controversial first, Sterling
- Software is putting all of Usenet on CD-ROM every month. Less
- controversial was our discussion with members of the HyperCard
- team, providing insights into HyperCard's present and future.
- Also, a review of the excellent "The PC is not a typewriter,"
- your last chance to turn in that System 7 coupon, a more
- detailed explanation of video memory, and a better way to
- rebuild the desktop.
-
- Copyright 1990-1992 Adam & Tonya Engst. Non-profit, non-commercial
- publications may reprint articles if full credit is given. Other
- publications please contact us. We do not guarantee the accuracy
- of articles. Publication, product, and company names may be
- registered trademarks of their companies. Disk subscriptions and
- back issues are available.
-
- For more information send electronic mail to info@tidbits.uucp or
- Internet: ace@tidbits.uucp -- CIS: 72511,306 -- AOL: Adam Engst
- TidBITS -- 9301 Avondale Rd. NE Q1096 -- Redmond, WA 98052 USA
- -----------------------------------------------------------------
-
- Topics:
- MailBITS/10-Feb-92
- System 7 Coupon
- HyperCard Confabulation
- Usenet on a CD-ROM, no longer a fable
- The PC is not a typewriter
- More on Video Memory
- Reviews/10-Feb-92
-
- [Archived as /info-mac/digest/tb/tidbits-106.etx; 31K]
-
-
- MailBITS/10-Feb-92
- ------------------
- The mailing list at SFU continues to suffer strange problems, and
- although we've worked some of them out with the help of the
- administrators there, it seems that some of you haven't received
- TidBITS#105, which I sent out last week. If that is the case, my
- sincere apologies. We considered sending it out again but decided
- that most people probably had it and would not appreciate another
- copy. The bugs continue to die, and to help with the heavy load
- we're going to set up a LISTSERV as well. I'll post information on
- how to subscribe to TidBITS there once everything is finalized. In
- the meantime, those of you who missed TidBITS#105 can easily
- request it via email from <LISTSERV@RICEVM1.BITNET>. Just send
- email to that address and put this line in the _body_ of the
- mailfile.
-
- $MAC GET tidbits-105.etx
-
- Alternately, you may be able to use FTP to get the file /info-
- mac/digest/tb/tidbits-105.etx from <sumex-aim.stanford.edu> or as
- a posting in the Usenet group comp.sys.mac.digest, whichever is
- easiest.
-
-
- Desktop Construction
- Dale Southard writes "As a longtime TidBITS reader: THANKS! To the
- point, you mentioned rebuilding the desktop as a fix for the "lost
- folder bug." I don't know about the bug, but there is an easier
- way to rebuild the desktop:
-
- * Quit all apps but the Finder.
- * Hit command-option-esc to force quit the Finder.
- * Click on the "Force Quit" button and then immediately depress
- and hold command-option.
-
- When the Finder restarts, it will give you the option of
- rebuilding all mounted disks. I think it's much more convenient
- than restarting as we used to have to do."
-
- [Adam: We've received information indicating that rebuilding the
- desktop and using some of the fixes we mentioned last issue may
- not work in some cases. As we mentioned, it still looks like the
- only fix guaranteed to work is to reformat the hard drive and
- restore from your up-to-date backup. More on this when we know.]
-
- Information from:
- Dale Southard -- GRX1512@uoft02.utoledo.edu
- Henning Pape-Santos -- henning@banana.ithaca.ny.us
-
-
- SoftAT Mistake
- Mark H. Anbinder corrects our mistake in our recent article about
- SoftPC. "SoftAT is _not_ an add-on product that's to be added to
- Universal SoftPC, the way the EGA/AT Option Module needed to be
- added to an existing copy of SoftPC. SoftAT is a stand-alone
- product."
-
- Information from:
- Mark H. Anbinder -- mha@baka.ithaca.ny.us
-
-
- System 7 Coupon
- ---------------
- Mark H. Anbinder writes, "The System 7 coupon program, which
- allowed Mac purchasers to send in a special coupon to receive a
- free System 7 kit, expired on 31-Dec-91, but Apple has extended it
- to cover Macs purchased through 02-Feb-92 (presumably because
- that's when the Right Now Rebate promotion ended). If you have one
- of those coupons sitting around and haven't yet sent it in, now is
- the time! Your coupon must be postmarked by Friday, 14-Feb-92, so
- better get it in the mail right away."
-
- Information from:
- Mark H. Anbinder -- mha@baka.ithaca.ny.us
-
-
- HyperCard Confabulation
- -----------------------
- I appear to have opened an intellectual can of worms in
- TidBITS#102 with my comparison of HyperCard and QuickTime and my
- statement that HyperCard was, in some respects, a commercial
- failure. That article provoked an extremely interesting and
- enlightening discussion with Kevin Calhoun, who was Apple's lead
- engineer for HyperCard 2.0 and 2.1, and with Mike Holm, who has
- been the HyperCard Product Manager since 1987.
-
- I have received several other lengthy editorials on the subject of
- HyperCard and its success, and I'm pleased to announce that we
- will be putting together a special HyperCard retrospective issue
- to be released this summer when HyperCard celebrates its fifth
- birthday. That issue will explore what HyperCard truly is, where
- it has come from, where it is going, how it has succeeded and how
- it has failed, and in the same way that HyperCard itself has
- appealed to numerous different types of people, the issue will
- feature opinions from the famous and the not-yet-famous alike.
- However, you'll have to wait until this summer for that issue, and
- Kevin asked that I publish his reply to my controversial
- statements right away since he feels HyperCard is just starting to
- come into its own now.
-
- Kevin Calhoun writes...
- In TidBITS #102, you write that Voyager's Expanded Books are "one
- of the few commercial programs to use HyperCard." In my view, this
- is the kind of observation that can only be made by a person who's
- not paying attention! Let me point out some products that you've
- so far failed to notice.
-
- ABC News Interactive offers more than half a dozen interactive
- videodiscs titles with HyperCard-based software. Warner New Media
- now has four titles in their series of Audio Notes, with the
- latest, "The Orchestra," released just last week. There are
- thirteen titles in Voyager's Video Companion series, four in their
- CD Companion Series, and three in their brand new series of
- Expanded Books. Stackware offerings are the cream of the crop
- among the CD-ROM products for Macintosh, with titles such as
- "Exotic Japan," "Baseball's Greatest Hits," "Anatomist," "Cosmic
- Osmo," and "The Manhole", in addition to the various series of
- CD-ROM offerings I've already mentioned.
-
- Momentum behind these products appears to be building. Over the
- last six months, Voyager has released 14 new products; 11 of them
- are based on HyperCard. At the Macworld Exposition recently held
- in San Francisco, they sold out of their complete stock of two of
- their Expanded Books, 1000 copies of each in less than four days.
- They already have plans for dozens of additional titles for the
- series.
-
- The biggest names in the industry - Microsoft, Claris, Lotus, and
- Apple - all provide online help in the form of HyperCard stacks.
- Yes, that's right: Microsoft Excel, Lotus 1-2-3 Macintosh,
- ClarisWorks, and Apple System Software 7, among others, are all
- products that use HyperCard.
-
- And, of course, there are the dozens and dozens of high-quality
- non-commercial stacks that have been developed by university
- professors, corporate training departments, hobbyists, etc., and
- that cover a remarkably broad range of topics, from vegetarian
- recipes to Renault auto parts.
-
- Most of the earliest software that includes QuickTime-based
- content has been developed in HyperCard, including "Baseball's
- Greatest Hits" and Apple's own "Apple Intro News." And by the way,
- this is a phenomenon that has occurred over and over again:
- whenever new multimedia capabilities become available to
- Macintosh, such as sound input, control of external video sources,
- and now QuickTime, they are often applied effectively for the
- first time within HyperCard stackware.
-
- Elsewhere in TidBITS #102, you write, "Because there's no market
- around HyperCard, it's languishing at Claris and everyone is
- sitting around trying to figure out what to do with it." I think
- you should look again. Ask Nikki Yokokura, author of "Exotic
- Japan," if she is just "sitting around." Or ask Steve Riggins,
- chief propeller-head at Voyager, if he's still "trying to figure
- out what to do" with HyperCard. In my view, HyperCard is already
- one of the most useful and most widely used electronic publishing
- tools yet devised, and it has spawned a healthy number of
- impressive commercial products.
-
- In your comparison of QuickTime and HyperCard, you write,
- "QuickTime is like HyperCard." This is not the case. QuickTime is
- a technology that will be incorporated into applications by
- software developers; HyperCard is a development tool that allows
- people like you and me to become software developers, so that we
- can apply technologies like QuickTime in ways of our own.
-
-
- Mike Holm adds...
- Kevin, good volley on the TidBITS article. There is a market
- around HyperCard, not only of products like those from Voyager or
- other interactive media publishers, but development tools as well.
- Just ask Ray Heizer or some others. We added a ten page supplement
- of new and updated products to the HyperCard Resource Guide handed
- out at Macworld. The thing to understand is that the overall
- market for development tools on the Mac is small to begin with,
- and HyperCard is perhaps the biggest fish in that small pond. The
- other thing to keep in mind is that HyperCard increased by a
- factor of four or five the number of people creating software on
- Macs over the last four years. This is a non-trivial number (low
- six figures), and one that IBM, Sun, and Microsoft all envy.
-
-
- Kevin adds...
- I restricted my comments about commercial stackware to just the
- one category of content-based software because that happens to be
- the category that interests me most and because it has recently
- begun to grow at a remarkable rate. I left out such things as
- Danny Goodman's new product, Connections, which had a very good
- review locally in the San Jose Mercury News. Perhaps it would be
- valuable to gather a list of all currently available commercial
- HyperCard-based products from TidBITS readers.
-
- By the way, I object very strongly to the bias that software
- content is inherently less valuable than software functionality.
- This bias is reflected by the present lack of balance in the
- software market, which is full of whiz-bang file compression
- utilities but still short on engaging software content.
-
- I like to think of things this way: a laserdisc or a videotape is
- software that contains a movie. An audio CD is software that
- contains music. The Oxford English Dictionary is now contained in
- software, after all these years, as is the full collection of the
- Louvre. When a large software library that contains such things
- becomes cheaply and conveniently available for Macintosh in a
- compelling interactive form, together with additional digital
- amenities, will today's critics of HyperCard tell us that they
- won't be happy until the library also includes a sufficient number
- of best-selling tools for toggling their bundle bits?
-
- As for me, I think that content is the future of software. I'm
- looking forward to the day when there are software houses as large
- and high-rolling as yesterday's movie studios, with pomp and
- prestige and high production values, that turn out the equivalents
- of "Citizen Kane" and _Tristram_Shandy_ and "The Civil War" for
- software.
-
-
- And Adam replies...
- You both make some good points here, especially about a field that
- I have been unable to watch due to lack of a CD-ROM drive. I think
- in part what I was getting at is that HyperCard is an incredible
- and flexible tool, but the primary stacks that have succeeded in
- the market are those that provide information, as do most of the
- examples. Of all people, I certainly cannot denigrate software
- content - after all, what is TidBITS but content? - but at the
- same time, we must recognize that both content and functionality
- have their place. I suspect that some of the tension here arises
- from the price differential - Microsoft can charge $495 for Word
- 5.0, but Voyager only charges $19.95 for their Expanded Book
- version of Douglas Adams's entire four book Hitchhikers Trilogy, a
- literary feat which took him a heck of a lot longer to put
- together.
-
- Please also note that I have never implied that HyperCard as a
- product is a failure; merely that the type of commercial market
- that was anticipated by some after the initial release has not
- materialized. My fear is more that without the support of a
- commercial market (which perhaps Voyager and the others are
- providing in this respect) and with the confusing marketing
- policies surrounding it, HyperCard may cease to be a development
- platform of choice for the individual or may even disappear
- entirely, which I feel would be a tragic loss to Macintosh users,
- and even more broadly, to the entire computer community.
-
- Maybe some of my worry about HyperCard relates to the trouble
- Apple had defining it early on; the term "software erector set"
- comes to mind. I imagined using that erector set to build castles,
- forts, bridges, and Rube Goldberg machines, but all that I see
- surviving on the commercial market are plain houses, albeit
- extremely nicely designed ones with interesting furnishings, if
- I'm not stretching my allusion too far. However, in the course of
- this discussion, I've come to realize that HyperCard's developers
- have always seen HyperCard as a tool for the individual (not as
- competition for MPW C) and as a launchpad for electronic
- publishing, one that I certainly took advantage of with the first
- 99 issues of TidBITS. My feelings that HyperCard had failed stem
- in this case from inappropriate expectations, supported as they
- may have been by mediocre marketing, and in fact from mistakes I
- made with that original TidBITS stack considering my means of
- distribution.
-
-
- HyperCard and QuickTime
- I think my perhaps-too-subtle comparison of QuickTime and
- HyperCard wasn't sufficiently explained. I see them both as
- technologies that Apple created, developed, and marketed, albeit
- in different ways. Obviously HyperCard is a tool while QuickTime
- is an extension to the system, but my point was that if run-time
- read-and-link-only HyperCard had been created and marketed as a
- system extension, then the same sort of market that has sprung up
- around QuickTime would have sprung up around HyperCard, perhaps
- encouraging some of the more varied uses of HyperCard that haven't
- appeared or survived in the commercial market while not
- restricting the information publishers in any way.
-
-
- HyperCard and Claris
- Finally, my statement, "Because there's no market around
- HyperCard, it's languishing at Claris and everyone is sitting
- around trying to figure out what to do with it," was poorly
- written, which accounts for the answer Kevin gave above. Users and
- developers have absolutely no trouble figuring out what do with
- HyperCard; just look at the gigabytes of stacks available as
- freeware or shareware. I should have said "and everyone there [at
- Claris] is sitting around trying to figure out what to do with
- it." I've heard rumors that the HyperCard team was facing some
- internal difficulties that were slowing development on 3.0, and
- it's obvious from the confusing upgrades and developers' kits and
- hardware bundles that the marketing folks are having trouble
- positioning HyperCard effectively. Something must be done, either
- internally between Apple and Claris, or through the creation of a
- free HyperCard Engine, to ensure that everyone can always use
- these stacks.
-
- My sincere thanks to Kevin and Mike for participating and for
- providing such fascinating material for TidBITS. I'm sure that
- many of you will have immediate reactions to the opinions here,
- and if you wish to write a coherently-argued article supporting
- your opinions, send it to me and I'll consider it for inclusion in
- our HyperCard retrospective issue (but I can't guarantee I'll
- publish everything).
-
- Information from:
- Kevin Calhoun -- jkc@apple.com
- Mike Holm -- HOLM1@applelink.apple.com
- Adam C. Engst, TidBITS Editor -- ace@tidbits.halcyon.com
-
-
- Usenet on a CD-ROM, no longer a fable
- -------------------------------------
- by Ian Feldman
-
- The latest tempest-in-a-teacup of hurricane proportions on Usenet
- is raging quite nicely in the news.misc group. This time the
- subject matter should be of interest to many, so here comes the
- nitty-gritty.
-
- A company in the USA recently began offering Usenet-on-CD-ROM
- monthly disks for a fee (approximately US$35 per disk, if memory
- serves me right; $25 per issue if one subscribes to it). As a
- product goes it is not expensive; in fact it is downright cheap
- all things considered. Getting a full news feed each day from
- somewhere - even if from a nearby friendly service - is bound to
- cost many times that in telephone charges alone. On the other
- hand.... having the full monthly Usenet (ALL OF IT, from all
- countries of the world, not solely from the USA) arrive in your
- mailbox, even 2 to 4 weeks after the posting date, must be
- considered an incredible and amazing opportunity.
-
- Ah, to be able to peruse all 500+ MB of it at will, at one's
- convenience, even without formal access to Usenet. Therefore all
- kudos to the initiator, Sterling Software, and may they live long
- and prosper. Thanks for that alternative news feed, even if it is
- a bit slooow. But then, as someone recently said on the net,
- "there are few other media that can beat the bandwidth of a truck
- full of CD-ROMs." ;-)
-
- Of course, that... feeling of elation, for want of a better
- phrase, was not what the storm was about. Rather than accept the
- service that Sterling Software offers for what it effectively is,
- a different form of the distribution of the net news, the rage was
- all about (1) them charging you for the CD-ROMs (the horror! the
- horror!) and (2) them infringing upon real or imagined
- intellectual property rights of the posters to Usenet.
-
- Sterling Software, in the words of its spokesman, Kent Landfield,
- makes no claims as to the reuse of the public news that they
- supply. They view themselves entirely as an alternative transport
- and archival service (all those trucks full of CD-ROMs gathering
- dust ;-)) Thus anybody will be free to put the contents of the
- NetNews/CD's up for use with FTP, mount them for access in local
- BBS, import them into the WAIS (Wide Area Information Service) and
- so on. The original posters' rights and restrictions on reuse, if
- any, are still in force. The information on CD-ROMs continues to
- be as free as it was in the beginning.
-
- Yet, listening to some of the arguments being passed in the heat
- of the discussion it becomes clear that in the mind of the flamers
- it apparently is acceptable that UUNET, PSI, and other
- _commercial_ Usenet providers charge for the telephone-accessed
- feeds, not to mention the charges to the telephone services
- themselves, but it is definitely not acceptable to offer an
- alternative that's cut in the plastic and aluminum that the CD-
- ROMs are made of.
-
- No, sireee, the latter is "publishing," therefore constitutes
- criminal unauthorized infringing upon use of _their_ words which
- may not be embossed in stone unless they get paid for it. Well,
- that's roughly how the argumentative posters feel. At times it was
- outright funny, but chiefly left me with a feeling of very limited
- and narrow minds now trying to butter up the importance of their
- own egos, the written end products of which are usually submitted
- in a Without-A-Thought[tm] fashion to the net. Please observe that
- I claim full intellectual property rights for the above
- expression, "Without-A-Thought[tm]," which may not be used by
- anyone without written permission from the undersigned. I waive
- that right for use by TidBITS and Sterling Software however (yes,
- since TidBITS is distributed in the comp.sys.mac.digest group it
- too will end up on the CD-ROMs).
-
- The above was, of course, a bit sarcastic. But it illustrates well
- where we'd soon be if the extreme arguments against the NetNews/CD
- product were taken at a face value and adhered to universally.
- Anybody[tm] could claim Sole Rights[tm] to Any Expression
- Whatsoever[tm]. Fortunately the company in question has had the
- guts to face up to the potential lawsuit-trigger-happy netters by,
- effectively, taking the legal grounds for a suit out of their
- hands. In a recent message on the net they offer every individual
- among those bent upon not allowing own contributions to be
- distributed in plastic and aluminum to register with them on an
- individual basis, asking them to remove any future posts of his or
- her from the data mass prior to each monthly pressing of it.
- Fortunately the CD-ROMs' contents are prepared by a special
- software that filters such people's posts automatically so the
- process need not be that complicated. One registered letter to the
- Sterling Software and they're gone, gone, gone forever, and the
- rest of us are hardly worse off for it.
-
- In the end the arrival of such a service may perhaps even lead
- some of the current "I Post Therefore I Exist" submitters (it
- sounds even better in Latin!) to consider twice whether or not to
- risk being an eternal (or at least the life of a CD-ROM) subject
- of ridicule for posting offensive or stupid stuff, an activity
- that up to now has largely been an unpunishable offense. Perhaps
- that in part accounted for the recent outburst on the net, that
- the NetNews/CD effectively changes the rules of the game; from now
- on self-censure becomes a necessity for all posts by all nominally
- responsible, and wishing to retain that label, people.
-
- The whole issue of the NetNews/CD is too vast and too important to
- be presented here in depth; those interested with access to the
- Usenet may try to read the relevant articles by visiting the
- /usr/spool/news/misc at the earliest opportunity. Alternately,
- send email to the company (addresses below) to be added to an
- administrative (cdnews) or a directional (cddev) mailing list.
-
- administrative list: cdnews@sterling.com
- directional group: cddev-request@sterling.com
-
- Sterling Software -- 402/291-8300
-
- Information from:
- Ian Feldman -- ianf@not.bad.se
-
-
- The PC is not a typewriter
- --------------------------
- You may wonder why I'm reviewing a book for PC clones here in
- TidBITS. First, I'm not blind to happenings elsewhere in the
- computer world; I just prefer to focus on the Mac, and second, I
- think everyone who has a friend learning publishing on a PC should
- give them this book to cut down on the egregious errors that show
- up in desktop published documents.
-
- "The PC is not a typewriter" is a direct descendent from Robin
- Williams's (yes, she of "The Little Mac Book" fame) previous book,
- "The Mac is not a typewriter." The heredity shows - this latest
- anti-typewriter book checks in at under 100 pages and is written
- in the same concise, friendly style. I have to give Robin credit
- for retaining her ever-pleasant style even while discussing
- subjects like curly quotes that drive many otherwise peaceful
- typesetters to violence when desktop publishers blithely abuse
- hash marks. Despite not being much of a desktop publisher, I must
- admit to being something of a snob when it comes to printed matter.
- I like to see curly quotes and all those neat things that the
- computers allow us to do so easily if only we know. The setext
- format strips such goodies out of TidBITS because they cannot pass
- through most electronic mail gateways, but those of you who read
- the HyperCard editions of TidBITS may remember the curly quotes
- and em-dashes. Nonetheless, if you want your work to look good in
- hot toner...
-
- "The PC is not a typewriter" may contain much of the same
- discussion of basic typographical and publishing terms as the
- previous Mac version of the book, but that's immaterial; the
- advice applies all the more in the PC world. Robin covers topics
- such as single spaces between sentences, curly quotes, proper
- dashes, special characters and accents, underlining, tabs and
- indents, widows and orphans, justified text, the difference
- between serif and sans serif fonts, and numerous other little
- touches that convey an aura of professionalism. Someone we know
- (who should know better) periodically puts together a simple
- family newsletter in WordPerfect 5.0 under DOS, and to put it
- nicely, she needs to read this book badly.
-
- What sets "The PC is not a typewriter" apart from the standard
- books is that it isn't a "how-to" book, it's a "why" book. Robin
- doesn't attempt to describe in excruciating detail how to perform
- all these beautifying procedures. Instead she clearly explains why
- you want to avoid widows, orphans, and all capital letters, and
- why you want to use curly quotes, accents, and bullets. Those of
- you who have tried to get special characters out of a PC will know
- that it can be about as difficult as it is for Bullwinkle to pull
- that rabbit out of his magic hat. To that end, the book includes
- tables and brief instructions for extracting those characters,
- when possible, from the most popular PC publishing programs.
-
- Learning to do desktop publishing on a PC can be difficult, but
- using a Mac or a NeXT isn't an option for most people. If you are
- in this situation or know someone in it, do everyone a favor and
- check out this book. If nothing else, it's inexpensive ($9.95
- list), won't take long to read, and definitely won't significantly
- clutter your bookshelf. Highly recommended.
-
- Peachpit Press -- 800/283-9444 -- 510/548-5991
-
-
- More on Video Memory
- --------------------
- Even with the article we did on the IIsi and IIci video memory
- oddities, the issue remains murky to many people. Glenn Austin was
- kind enough to provide more detailed information which may further
- illuminate the matter, although for those of you who don't speak
- hex, I recommend just ignoring the address information - I did and
- still got the basic idea.
-
- Here's the memory map under System 6 and 7 on the IIsi and IIci,
- assuming (for the sake of discussion) that there is 8 MB of RAM in
- the machine, 2 banks of 4 MB RAM each, and the machine is 256-
- color capable:
-
- Where Description Size Logical address
- Bank A Video RAM $50000 $FBB00000
- Bank A Main RAM $3B0000 $00400000
- Bank B Main RAM $400000 $00000000
-
- So the memory map looks something like this (in 24-bit mode,
- 32-bit is similar):
-
- -----------------
- | Bank B | $00000000 (low)
- | RAM |
- | |
- | |
- | |
- -----------------
- | Bank A | $00400000 (high)
- | RAM |
- | (above video |
- | RAM in phys. |
- | address) |
- -----------------
- | ROM | $00800000
- -----------------
- | Video "NuBus" | $00B00000
- -----------------
- | NuBus slots | $00C00000
- | $C - $E | $00D00000
- | | $00E00000
- -----------------
- | I/O | $00F00000
- -----------------
-
- Whatever shares bank A with the video memory will run slowly
- because the video memory is accessed constantly. Therefore, you
- want to load items that the Macintosh uses relatively
- infrequently, such as the disk cache, into bank A. This was not as
- apparent with System 6, because applications load into low memory
- (bank B) under MultiFinder 6. (This was the main reason that
- MultiFinder was recommended for the IIsi and IIci under System 6.)
- Under System 7, applications load at the _top_ of MultiFinder's
- heap, (that is, in high memory or bank A). The System 7 Finder
- will load into that high memory in bank A - unless that memory is
- already occupied by something else, so if possible, you shouldn't
- load the Finder (a frequently accessed item) in that part of RAM
- that has the most contention between two processes - CPU and
- video.
-
- Apparently the disk cache uses high memory; MacsBug uses high
- memory; and some INITs use high memory. This helps explain why the
- machine runs slower under System 7 (because the Finder loads into
- bank A, which is also being used heavily by the video), and why
- increasing the disk cache size (or using MacsBug) can dramatically
- speed up the entire Mac. It also explains why System 7 can be
- proportionally slower on the IIsi and IIci than on other Macs and
- why a NuBus video card can dramatically improve performance. Of
- course, an accelerator doesn't hurt either - an accelerated IIci
- (with the Magellan 040 board that Glenn works on) can show up to
- twice the video performance of a Quadra 700, which has built-in
- VRAM.
-
- Obviously, it's a lot easier to fill up bank A with the disk cache
- and MacsBug if you only have 1 MB in bank A, which isn't a problem
- on the IIsi with its soldered-on 1 MB bank A. The IIci is more
- problematic, since you can easily put 4 MB or even 16 MB in bank
- A, thus making it virtually impossible to fill up bank A in order
- to increase the speed. Of course, if you can afford 16 MB in bank
- A, you can afford a cheap video card that will make this entire
- problem moot.
-
- Information from:
- Glenn Austin -- gla-aux!glenn@skinner.cs.uoregon.edu
-
-
- Reviews/10-Feb-92
- -----------------
-
- * MacWEEK
- DeltaGraph Pro -- pg. 39
- PageMaker 4.2 -- pg. 39
- MacInTax 92 -- pg. 42
- AudioTrax -- pg. 43
-
- References:
- MacWEEK -- 03-Feb-92, Vol. 6, #5
-
-
- ..
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