Xref: utzoo comp.unix.amiga:137 comp.sys.amiga.misc:444 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!uw-beaver!mit-eddie!snorkelwacker.mit.edu!think.com!samsung!uunet!munnari.oz.au!uniwa!DIALix!metapro!bernie From: bernie@metapro.DIALix.oz.au (Bernd Felsche) Newsgroups: comp.unix.amiga,comp.sys.amiga.misc Subject: Re: Adding Symmetric Multiprocessing to Amiga UNIX. Message-ID: <1991Jan31.061903.20881@metapro.DIALix.oz.au> Date: 31 Jan 91 06:19:03 GMT References: <1991Jan29.024542.1@ccvax.iastate.edu> Organization: MetaPro Systems, Perth, Western Australia Lines: 33 In <1991Jan29.024542.1@ccvax.iastate.edu> taab5@ccvax.iastate.edu (Marc Barrett) writes: > It has been discussed before (especially in comp.sys.amiga.hardware) >that, when a CPU card (such as a 68040 card) is added to the Amiga 3000, >the 68030 on the motherboard remains available as a coprocessor. True on the 25MHz motherboard. >Unfortunately, neither AmigaOS nor UNIX SysVR4 support multiprocessing, >so although the 68030 remains available hardware-wise, it is unavailable >for use because of the system software. Don't jump the gun, Marc. SYSVR4 does not *yet* support multi- processing. (Why do I feel that this thread is going to wind up in my kill file?) Please catch up with the news on UNIX, before you make outrageous comments. I'm sure that when you take delivery of the `040 coprocessor for your A3000UX, SYSVR4 multiprocessing will be a bit closer than just the horizon. If it is wise to do so, and other posters have already pointed out that merits may be dubious, SMP could be available for the Amiga, under UNIX, and maybe (earlier?) under AmigaDOS (Did I just hear CBM's software engineers scramble for the exit :-) ?). IMHO, the `030 is of far more use as an I/O processor, though the hardware requirements for making this work _really_ well, would be greater than a direct plug-in. (e.g. Most interrupt signals would have to be "masked" from the `040.) -- _--_|\ Bernd Felsche #include / \ Metapro Systems, 328 Albany Highway, Victoria Park, Western Australia \_.--._/ Fax: +61 9 472 3337 Phone: +61 9 362 9355 TZ=WST-8 v E-Mail: bernie@metapro.DIALix.oz.au | bernie@DIALix.oz.au