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- Newsgroups: comp.sys.amiga.misc
- Path: new-news.sprintlink.net!eskimo!drizzit
- From: drizzit@eskimo.com (G. Baldwin)
- Subject: Re: Future Amigas
- X-Nntp-Posting-Host: eskimo.com
- Message-ID: <Dq1HnM.2nq@eskimo.com>
- Sender: news@eskimo.com (News User Id)
- Organization: Eskimo North (206) For-Ever
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- References: <peterk.0meu@combo.ganesha.com> <4982.6672T794T1428@gramercy.ios.com> <1292.6680T826T2629@gramercy.ios.com>
- Date: Thu, 18 Apr 1996 03:57:21 GMT
-
- Pacarana (larrymb@gramercy.ios.com) wrote:
- : >> I don't think that is valid anymore. First they said they would use PA-
- : >>RISC+Hombre,
-
- : >Not true, we never said that. Perhaps someone on the net, but just don't
- : >believe anything which doesn't come directly from the source. We always
- : >said, that PA-RISC was *one* candidate among others, like PPC, MIPS,
- : >and SPARC.
-
- : Still, didn't you say yourself that you rather liked and favored the PA-
- : RISC?
-
- The newer HP-PA chips have one bad problem that I am sure some people
- would frown upon: their off-chip caches MUST run at FULL CPU speed (200
- MHz or higher) using fast SRAM, which is expensive as all hell. Such a
- system may not be very cost:perofmance effective.
-
- : >> then PA-RISC or PPC plus a new more powerful Amiga
- : >>custom chipset,
-
- : >We didn't say this either. Where do you get your claims?
-
- : But a few of the official AT releases posted here and elsewhere mentioned
- : development of a new and more powerful custom chipset.
-
- Custom chipset doesn't have to mean "AT developed custom chipset". It
- could be anything that AT likes and is willing to slap on a motherboard
- and then write a driver for.
-
- : I might even have a transcript stashed on my HD somehere. Although it
- : doesn't sound like it, perhaps you meant "use an existing SVGA chip" by
- : develop a new and more powerful custom chipset.
-
- Remember that the next generation chipset could be made of both off the
- shelf chips and in-house custom chips. If we look at AAA, the grfx chips
- were a lot faster than the AGA ones, but alas, it would take a lot of
- optimized and custom code to get graphics to run at a good rate. In a
- chip like S3's 968, what it lacks in fancy hardware (vs. AAA) it just
- makes up in raw speed. However, if we look at the AAA version of Paula
- (the Mary chip), it is comparable to many current PC floppy, sound, and
- I/O chips, and has a few things that beat them out - it has 8 channel
- stereo 16-bit percision sample playback with rates up to 100KHz, support
- for 880KB, 1.76MB, and 3.52MB floppy disks [compatable with trackloaders,
- unlike Generic PC floppy controllers], and support for two high speed
- buffered serial ports, ect... not too bad. The only problem is that the
- Mary just happened to have the most bugs of all of the chips in the AAA
- chipset.
-
- : Many months ago when some people on Fido were afraid that the chipst
- : would be dropped, someone posted that you had said that you thought very
- : highly of custom Amiga chipsets and that that was the way to go even
- : though some others at AT didn't seem to think so. Maybe they
- : misinterpreted what you had said, or got the info from someone else, who
- : got it from someone else and meanings changed along the way. Anyway,
- : that's were I got this.
-
- Custom chipsets *CAN* be very costly to make, especially if you make them
- to be compatable wholly/partially with an older chipset (much like how AGA
- was to OCS/ECS, and how in many ways AAA was to AGA). If AT were to make
- a new Grfx chipset from the ground up with people who are experienced at
- doing such a task, it wouldn't be quite as bad. But why do that, when you
- can get a very good custom chip already designed from another company?
- Remember that the chip world has advanced a lot in the past 10 years while
- Commodore had its thumbs up its ass.
-
- Greg Baldwin (drizzit@eskimo.com)
- Amiga junkie and user since 1987 Computer Science & DTV Student
- Commodore64 fan since about 1983 http://www.eskimo.com/~drizzit
- Tyranical EFNet #Amiga Channel Operator "Drizzit"
-