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- Path: cityscape.co.uk!usenet
- From: bs05@cityscape.co.uk (NEW COLLEGE)
- Newsgroups: comp.sys.amiga.programmer
- Subject: amiga questions. - riscami.txt [1/1]
- Date: 8 Jan 1996 13:26:26 GMT
- Organization: IP-GOLD User
- Message-ID: <4cr622$59j@news.cityscape.co.uk>
- NNTP-Posting-Host: cisbs05.demon.co.uk
- X-Newsreader: WinVN 0.92.6+
-
- I saw Amiga Report 3.21 recently, and in it there is a report
- from a speech from escom stating that they will develop a RISC
- amiga for 1st quarter '97, that the AAA chipset is dead and their
- main task will be to update the OS and make it cross systems.
- After hearing the same news from other sources I started thinking
- (there's a first time for everything!) and a lot of what they said
- raised more questions than answers, so I thought by posting this I
- could get them all answered at once.
- First about the OS porting:
- If they port the OS to other systems it could be disastrous
- for the amiga in general, because although the OS is undoubtedly
- the best I have ever used if it is ported it will lose some of
- it's best features, most importantly because it could not longer
- be sure that each platform had the same base config, any extra
- features would have to be emulated in software, thus packing out
- and slowing down the kernal extremely i.e. the new RISC amiga
- may have a superfast 24-bit blitter (I hope! :-) but how many
- powerMacs have you seen with one, any portable os would have to
- emulate one which would be slow. This also raises another
- important question, if the os has to use drivers to provide
- emulations of some features which will be slow, any software
- which hopes to be portable will not be able to use many of the
- RISC amiga's feature because it would crawl like a snail with
- arthritis on any other machine so we will end up with large
- podgy, slow apps. Also if the OS is to be portable it will
- immediately wipe out one of the key features of the amiga,
- hardware bashing, if each platform is different (as it will be)
- then the program cannot use things such a the copper or blitter
- directly because it cannot be sure it is there, instead it will
- have to go through the OS which will slow it down tremendously,
- for example if you feel like a challenge program a game like
- stardust without using the blitter or copper and only using OS
- calls, hard isn't it? Finally for this section the amiga OS gets a lot
- of its speed from the fact that most of intuiton`s buttons etc. are
- stored in rom along with most of the major OS code, if the OS became
- portable all of this would have to be loaded from disk, slowing down
- screen redraws ect. or it would all have to be loaded into ram, giving
- lightening fast redraws (faster than from rom) but would swallow large
- chunks of memory. At present AT seem to be trying to form some
- kind of wierd amalgam of windows, system 7 and workbench (Maybe
- they should call it Windows system workbench?), if they were to
- release the OS as a software package, as they seem to want to do
- it has a big chance of failing, just look at OS/2 that was a nice (sort-of)
- multitasking OS from IBM, one of the worlds largest computer companies
- but it only sold about 3 copies because of windows.
- With regard to the statement that they are dropping the AAA
- chipset and farming out the new chipset designs to a new company WHY!!!,
- the chipset is one of the amiga`s most powerful features which the OS uses
- extensively to give full pre-emptive (and FAST!) multitasking and dropping
- this in favour of a cheap and nasty svga card would be the worst decision
- ever made. Apparently for the new RISC amiga AT will farm out the design of
- the chipset to a outside company. This is not a bad idea if the outside
- company are any good but a far more sensible idea would be to give them the
- designs for the AAA chipset and tell them to modify them to suit AT`s needs.
- This is sensible because when Commodore died the AAA chipset prototype
- was 96% complete (figures from the deathbed vigil video), dropping a chipset
-
- this close to completion is like shooting yourself in the foot, even tough
- there was no proto. OS support this. In fact the lack of OS support would be
- an advantage because it will help AT to make a fresh start and rewrite the
- OS from the ground up. Without the tricks the chipset can do the amiga will
- be severely limited because it will be lacking most of the things it was
- originally designed for, for instance using present SVGA chips it will not
- be able to overlay screens of different resolutions, so no more menus like
- those in Dpaint, and no nice high resolution status bars in games, everything
-
- will have to run on the same screen, slowing things down, and no more fancy
- chipset tricks for demo coders, everything will have to use the cpu for
- tricks, if you want an idea of what this will be like just look at pc demos,
-
- boring arn`t they?.
- Almost finished now, just a couple more things.
- If they are serious about porting the OS I hope that the process of writing
- the code will not take up so much time that they will not be able to
- significantly rewrite the OS, because it is beginning to look a little
- dated against Win95.
- Finally if the new amiga uses PCI slots this would enable cheap PC expansion
- cards to be used, but this raises a major problem, all amiga cards have a
- small rom chip in them to say what they are, so that the autoconfig system
- can work but PC cards do not have this so the autoconfig will not work for
- them, this means that in the startup sequence a software system will have
- to be used to recognise and mount such cards, this will be aukward and
- slow (just look at the bodge Win95's software autoconfig does of some
- things).
-
- So, that's it, all of the above may seem like paranoia to some people but
- I feel that most people will want to ask at least one of these questions
- at some point so it would be easier to ask them all now.
-
- Jon R.
-
-
- P.S. If AT release a new interim amiga (or an updated 1200) , some sort of
- version of the present software pack but aimed at programmers would be
- a great sell I'm sure, because a lot of people who buy an amiga want to
- program it but at present are put off by all the different choices and
- the expense of the software (I'm only just learning myself). The pack could
- contain things like:
-
-
- A1200/Interim Amiga
- 250mb+ Hard Drive as an option
- A69K + A tutorial
- A C/C++ compiler like DICE, the new Storm Compiler or
- otherwise something like Amiga E.
- Includes, Autodocs and A tutorial for the above.
- Paint Package.
- A Gui construction system such as E's EasyGUI.
- A version of the RKM's fo the new machine.
-
- If this were released next year at around the same price I think AT would
- have a moneyspinner on their hands (I Know I'd buy it).
-
- P.P.S Does anyone know the E-Mail address for AT
-
- P.P.P.S (Last one!) Does anyone have any information on the new Storm
- C compiler, a URl/email-address would be nice :-).
-