On Thu, 8 Sep 2011, Brad Boyer wrote: > On Wed, Sep 07, 2011 at 01:58:56PM +0200, Ingo J?rgensmann wrote:
> > > > But yes, on Macs SCSI was always slow, afair... ;-) > > I still haven't found the time to get it working in Linux, but I did > find and buy a 100BaseT NuBus card. It even has a chip on it that > appears to be the same one as in some cards that are supported on x86, > so it might even be relatively simple. I have one of those cards too but there are more important things to work on first. > I don't expect to actually get close to 100Mb/s out of it since NuBus > only runs at either 10 or 20MHz, but it should beat out the 10BaseT > cards. Which machines have 10 MHz NuBus, BTW? > The SCSI performance on a Mac depends a lot on the hardware. My IIfx was > so slow that I think I let it run for two days doing a dist-upgrade of a > minimal install. The disks do something in the 100kB/s range as I > recall. Most other Macs are much better. Not exactly. Here's the situation: NCR5380 chip in PIO mode (as used on IIfx): slow (at best) NCR5380 chip in PDMA mode (other early Macs): broken DP53C9X chip in PIO mode (as used on 660av & 840av): stable but slow DP53C9X chip in PDMA mode (other Quadras etc): stable and fast The web site has some info about the individual Mac models: http://www.mac.linux-m68k.org/status/ Finn > > I recently acquired an FWB JackHammer card, which can take 68-pin > SCSI drives. It uses an NCR 53c720, so it should be possible to > get it working and get much better SCSI performance than the > built-in SCSI interfaces of any Mac (including ppc models). > > Brad Boyer > [email protected] > > > > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
