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- Path: nntp.teleport.com!sschaem
- From: sschaem@teleport.com (Stephan Schaem)
- Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.games,alt.sys.amiga.demos,comp.sys.amiga.misc
- Subject: Re: AB3D II beats Quake....
- Followup-To: comp.sys.amiga.programmer,comp.sys.amiga.games,alt.sys.amiga.demos,comp.sys.amiga.misc
- Date: 27 Mar 1996 17:49:45 GMT
- Organization: Teleport - Portland's Public Access (503) 220-1016
- Distribution: world
- Message-ID: <4jbv3p$97@nadine.teleport.com>
- References: <74000105753944194756@BIRDLAND> <10017.6659T1424T209@mbox.vol.it>
- NNTP-Posting-Host: linda.teleport.com
- X-Newsreader: TIN [version 1.2 PL2]
-
- Fabio Bizzetti (bizzetti@mbox.vol.it) wrote:
-
- : > bizzetti%mbox.vol.it@INTERNET wrote :
-
- : >> PC = only HighEnd CPU, standard chips.
- : >> Amiga = cheap CPU, clever custom chips.
-
- : >Well, maybe that "chip CPU" thought was the problem ?
-
- : Today, in modern computers most of the CPU time is used for graphic purposes.
- : Why do you think that PC people needs a 200Mhz PentiumPro? For games, to handle
- : what the SVGA can't handle (lotsa things), for OS what Windows95 is slow to
- : handle. We already have a good OS, now it's time to get hardware custom
- : solutions to remove all the silly and heavy needless gfx computations from
-
- Win95 offer a good HW interface for games... and overall GFX card do
- most of the work for rendering (blitting, line draw, text..). Whats missing
- is console type video mode, mainly video overlay and sprites.
- What the CPU do in game curently that take alot of resource is geometry
- transformation and rendering, all this in the process of beying accelerated
- by special CPU instruction to build multimedia driver, or dedicated HW
- for the geometry, and of course rasterizing card will soon flood the
- market. Win95/ win NT provide low level device to all this HW.
-
- : the CPU. An example from the past? Why the Amiga was much faster than ST in
- : scroll? (BESIDES hardware scroll): because the CPU didn't have a fast bit
- : shifter, and thus a *simple* custom circuit has been included in the blitter
- : for this job. This was versatile enough to serve both games and OS (rastports).
-
-
- Its not because of this really... it was because the amiga had much better
- video chip. You dont wanna know (Actually I forgot how :) The ST was
- able to acheive smooth scroll. The amiga could just play with a few pointers
- to acheive playfield scroll, the blitter was not involved.
-
- : I dont wish 3D boards: they're specialized and destined to die as soon as
- : the tastes change. What I wish is to study the CPU, and see in what kind of
- : compuations it lacks, thus "integrate" these facilities into a simple and
- : cheap hardware, expandable too. But a single family, or all the advantages
- : will be lost in this hopeless and silly "abstraction of hardware" theory.
-
- Yes, intel as done this and you can get doc and their 'multimedia'
- extension. A new set of instruction and 8 64bit register that you can
- 'partition', basicly enabling to work with multiple sample and do
- 8 mul+add in 1 cycle, at 200mhz thats 32000mips ... Well something like
- that. but basicly it will be used in geometry driver, rasterizing drive
- , audio driver.
- I think CPU since the hp-pa included a multimedia 'core', The R5000 I think
- also as some special functions.
-
-
- : Do you think that F1GP-II would still need a fast Pentium if it had a "decent"
- : video chipset?
-
- What would help it is: geometry engine + rasterizing engine... All this
- is comming very fast to the PC world.
-
- : "Decent" doesn't mean "10 years to design" and "10000000000$ dollars to make",
- : it means a solution designed by who have to use it: both assembly realtime
- : game coders and OS programmers.
-
- Before designing HW the OS better be designed correctly...
-
- : If c2p was obligatory ( = not possible to handle in hardware ), to perform it
- : would you prefer a PPC604, or only a "1000 transistors" simple Akiko?
- : Are we stupid?
- : I bet "Akiko" style solution would be still faster, and extremely cheaper.
-
- I would prefere a PPC604 VS a 68020+akiko anyday :)
-
- : Just a simple solution like the one I proposed (AgaEXTENDER), that has to
- : fight with the unilateral structure AGA->RGB, already allows stuffs that no
- : CPU can make in realtime, and, also if the most expensive CPU could, would you
- : prefer to spend 3000$ for a CPU board and go with it or 30$ for a custom IC?
-
- Both, like on Pc's...
-
- : >> And dont think that PPC603 is that fast.. Pentium Pro is much better.
- : >> And anyway, what about older Amiga users?
-
- : >Well, did not AT want to use the PPC604 ? As to the numbers i saw Pentium Pro
- : > did not look very good against PPC604...
-
- : At the time that the high-end AmigaPPC604 (although they said 603 for mid-end)
- : arrives in 1997, I would compare the 604 with the 80686 that will be already
- : *old*, and maybe in multiprocessing boards as standard for most tomorrow's PC.
-
- I'm not sure NT will take over win95 that soon... so by mid 1997 we probably
- see P7 with MMX. Probably cool machine then would be a <1000$ P132 with
- killer 3d HW engine.
-
- : While the PPC620 (if not cancelled because, as IBM said, "it's not much faster
- : than PPC604e") will be a 7.5 millions of (relatively) wasted transistors, if it
- : can't outperform PPC604e so much. Which more improvements will the PPC630 have?
- : At IBM they ran out of brain.
-
-
-
- : I see again a future for CISC: as the most expert of you know, the RISC haven't
- : been invented yesterday, they are old as me. The RISC vs CISC "war" has always
- : been combacted with RAM speed as main arm: when the RAM were relatively slow,
- : the CISC was faster than RISC; when the RAM technology was faster than CPU's
- : one, the RISC's were faster than CISC's. CPU technology has grown up a lot
- :
-
- But cisc are alot more work... 66mhz 060 VS 200mhz R10000 , the diference
- is way to big to catch up.cisc now have risc core, I guess its minus for
- simplicity but a + for bandwidth
-
- : .....
- : Advantages? 80x86 can contain upto 4 instruction codes into 32bit, while the
- : PowerPC can contain only 1. This means that parallelization will allow 80x86
- : to run 4 times faster than the fastest of PPC.
-
- The problem to this is risc instruction could do 2 or more opp per inst,
- while the 8bit inst on the x86 are swaping registers because it F* to the
- core.
-
- : We'll get soon BiCMOS technology for CPU's: 700Mhz, while the RAM will run at
- : a speed hugely inferior. That day (in 1-2 years) having more concentrate
- : programs (80x86 = upto 8 instructions every 64bit / PowerPC = upto 2) and
- : being able to perform more things with each instruction ( = CISC philosophy)
- : will outperform RISC's of lotsa times.
-
- The problem is that todays risc are very cisc looking... specially the PPC.
- Mips dont handle too well 'load/store' in my view
-
- : Intel is not dumb, they said 3 years ago what I understood nowadays.
- : Time for other people to understand it as well.
-
- A new architecture might rise soon from carefull code study... intel might
- patch it into the upcoming x86...
-
- : The only thing that can allow a future to RISC is ~5ns RAM, which is unlikely
- : to happen, indeed.
-
- Dont be silly...
-
- : So, we are back again.
- : The AmigaPPC604 (note: expensive high-end model) is not standard yet, while the
- : 200Mhz PentiumPro is already available and going to be surpassed soon by the
- : new much faster 80686/80786 "lotsa-Pentiums-into-a-chip" processors.
-
- Risc (R1000) beat the P6 at the same clock speed... The price also has
- to do with the market.
-
- : Of course, being the 680x0 abandoned, I can accept the PowerPC choice without
- : being worried *ONLY* if we help it in all the tasks that would waste all its
- : precious CPU time.
-
- LEts just push AT to provide a good OS and a strip down motherboard (CPU
- socket, ram socket, good PCI controler), then we can take HW from the
- cheap PC world.
-
- : Having a separate Audio/Video subsystem, and any CPU (PowerPC is the best
- : choice due to its commercial quality: but it *cannot* do all alone or it
- : will become the *worst* choice).
-
- LEt the people decide what HW/cpu power they want...
-
- : Yea, wise statement.
- : Anyway, I would prefer to not see tomorrow the death of the Amiga, and see
- : today the planning of a *GREAT* (read: PC killer) future, since it's *possible*
- : if you listen to Amiga experts instead of PC/API/C++/virtualization "experts".
-
- It will start by putting lots of effort in a new OS... and I mean alot of
- effort, and I dont think AT can do it. HW wise, lets leave it to the pro.
-
- Stephan
-
-