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- Path: d213-1.cpe.maroochydore.aone.net.au!user
- From: neilo@m140.aone.net.au (Neil O'Rourke)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Is Power PC really the way to go?
- Date: Sat, 20 Apr 1996 16:13:49 +1000
- Message-ID: <neilo-2004961613490001@d213-1.cpe.maroochydore.aone.net.au>
- References: <1387.6682T1355T514@mbox200.swipnet.se>
- NNTP-Posting-Host: d213-1.cpe.maroochydore.aone.net.au
-
- In article <1387.6682T1355T514@mbox200.swipnet.se>,
- videoking@mbox200.swipnet.se (Johan Otterstrom) wrote:
-
- > Is PowerPC really the future for the Amiga? I've heard several people who are
- > very doubtful about this whole project.
- >
- > Who will write the new PowerPC software?? Which companies dare to spend more
- > money on developing for a "to be maby" market? MacroSystem (germany) decided
- > to use the Dec Alpha in their Draco, mainly due to Motorola's previous track
- > record. Alpha's are available now in quantity.
-
- Yeah, yeah, the same thing was said about the power Macs, then Code
- Warrior came along and kill that talk.
-
- Phase 5 are porting the Amiga OS to PPC code, right? That surely implies
- that the port is going to follow the guidlines that the 68K OS has set in
- stone. Frankly, the Amiga OS has a much better chance of migrating
- unscathed to the PPC than the Mac had. The Mac OS, while powerful, was a
- monumental hack with all its library calls implemented as TRAP
- instructions. Those TRAP's are now what slow the whole thing down. The
- Amiga, though, calls its library functions via a jump table. Not that
- much difference, true (the TRAP jump table resides in low memory), but a
- big enough difference not to screw the whole system up.
-
- "So what?", you say. Well, since there is no addressing changes needed to
- make the library calls, and the calling syntax etc is more than likely to
- be the same, then all a C compiler has to do is spit out PPC code in place
- of 68K code, and that is what the new Storm C compiler is going to do.
-
- For most sanely written programs, this implies a recompile only.
-
- Neil O'Rourke
- neilo@m140.aone.net.au
-
- "Naturally, we maintain plausable denial" - Cancer Man, The X Files
-