Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!psuvax1!rutgers!cbmvax!daveh From: daveh@cbmvax.commodore.com (Dave Haynie) Newsgroups: comp.sys.amiga Subject: Re: Benchmark:A3000 w/ AMAXII Message-ID: <15191@cbmvax.commodore.com> Date: 16 Oct 90 21:56:41 GMT References: <1990Oct9.184447.4539@ee.rochester.edu> <15009@cbmvax.commodore.com> <90284.230747JKT100@psuvm.psu.edu> Reply-To: daveh@cbmvax.commodore.com (Dave Haynie) Organization: Commodore, West Chester, PA Lines: 38 In article <90284.230747JKT100@psuvm.psu.edu> JKT100@psuvm.psu.edu (JKT) writes: >It's my understanding that the tests listed under the "A3000-25/50" >column were run in A-Max II mode, not under AmigaDOS. As such, there is >no way to control what type of memory they run in, and to be honest, >I doubt it would make as much of a difference in Mac mode as it would >in Amiga mode. Myself, I am quite impressed with these results. An >EMULATION of a MAC PLUS stands up to a Mac IIcx in speed!! Realize that AMAX isn't really much of an emulator. I call this kind of thing a "hostile port" of the Macintosh OS. Basically, an Amiga has most if not all of the proper hardware to run the Mac OS, only Apple doesn't think that it should. So the clever folks at Readysoft have, without Apple's blessing of course, found a way to port this OS over to the Amiga. They may have to emulate some of the Apple hardware, or perhaps not, depending on the Apple OS and what you can change around when you don't have the Mac OS source code. Contrast this to true emulations, such as the C64 (Go-64, The C64 Emulator) or PC-Clone (The Transformer). In both of these, you have very hardware specific "operating systems" which aren't 68000 based. The programs must emulate the CPU, video display, keyboard controller chip, etc. The emulations with both of these must extend to bit-level hardware emulations, since these machines typically allow application programs to bang on the hardware. Emulating the Atari ST would be a hybrid system. Getting the actual ST OS to run on an Amiga is more of a hostile port than anything else. But if you want color screens, it would be necessary to emulate the ST's video control registers, and worse, the ST video display, which is a packed pixel display rather than a bitplane display as on the Amiga. There are probably other bits of ST registers that would have to be emulated at the hardware level, too. >|| Kurt Tappe (215) 363-9485 || Amigas, Macs, IBM's, C-64's, NeXTs, || -- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy Standing on the shoulders of giants leaves me cold -REM