home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!gumby!wupost!wuarchive.wustl.edu!hp48sx
- From: hp48sx@wupost.wustl.edu (HP48SX Archive Maintainer)
- Newsgroups: comp.os.minix
- Subject: Re: MacMinix problem on SE/Mac II...
- Date: 18 Aug 1992 18:08:59 -0500
- Organization: Washington University in Saint Louis, MO USA
- Lines: 19
- Message-ID: <hp48sx.714179139@wuarchive.wustl.edu>
- References: <9208181947.AA11788@ucbvax.Berkeley.EDU>
- NNTP-Posting-Host: wuarchive.wustl.edu
-
- glalonde@VNET.IBM.COM ("Glen Lalonde") writes:
-
- >There was some talk on comp.sys.mac.programmer about how the SE and MACII
- >(possibly plus?) don't support the TAS instruction. Well you can use it but
- >the hardware does not support it. I greped the minix source and it
- >does use TAS!! IM VI also indicates you can't use TAS on the SE and macII.
- >(Tas is in mpx.s in the kernel)
-
- The machines supports TAS, but it may be interrupted (which is against
- the purpose of this single instruction Test And Set). I am not sure how
- task swapping is done under MacMINIX, but it may be without problems.
- Worst problem is, that it will not be portable, and may crash later.
- And all instructions depending on being in supervisor mode will surely
- crash at some stage.
- --
- Povl H. Pedersen hp48sx@wuarchive.wustl.edu
- HP48sx archive maintainer
-
- All Opinions (C) Copyright the Intergalactic Thought Association
-