11 Mar
2009
11 Mar
'09
9:55 a.m.
On Wed, Mar 11, 2009 at 11:24 AM, Jeff Walther <trag at io.com> wrote:
The built-in SCSI is unenhanced SCSI. ?That means that
its maximum
theoretical performance is 5 MB/s. ?It's okay, but can seem a trifle slow.
?The best SCSI NuBus card only goes up to Fast & Wide (20 MB/s theoretical
maximum). ?There are no Ultra-SCSI nor IDE/ATA NuBus cards for the Mac.
Rats, I was hoping for an ide nubus board.
If the thing has an original hard drive in, you could
probably get some
speed boost just by installing a more modern SCSI drive with a faster
media speed. ?As slow as the built-in SCSI was in older Macs, the hard
drives of the day usually couldn't sling data even that fast.
I've had a lot of success on amigas with 4gig compact flash cards in
ide adapters. They're fast and completely silent, with a spooky red
activity light that glows through the vents on the top of the machine.
:-)
I know others in the amiga community have been able to make those work
with ide to scsi bridges so I'm thinking I might attempt this with the
iifx first, and then the q700. That should max out the scsi bus on
the q700 at least.
The connector is called an AAUI (Apple AUI) so you
need an AAUI to UTP
transceiver. ?Of course, if you're hunting on Ebay, there's no telling
what the seller will call it. ?There were also transceivers for thinnet
and thicknet, so do not accidentally buy the wrong one.
I saw the low end mac page for the connector so I know what it looks
like now at least. I also need an AUI adapter for the iifx. It kills
me to pay $20 on ebay for these things when I know people are probably
throwing them away.
Those things were cheap to free a few years ago. ?They
may have all made
their way through the second-hand system to the point where they're not as
easy to come by now. ?If you have a Goodwill Computer Works store in your
area, you might check their cable bins. ?Ours used to be full of the
transceivers.
I didn't know these stores existed. My wife keeps insisting that
goodwill doesn't take computers. Maybe we've been looking in the
wrong goodwill stores. I'm on the north side of chicago. I'm sure
they probably have one around.
snipped lost of great info about nubus video cards
At this point, I'm mainly interested in getting to 24 bit color. The
1152 resolution looks good on my 19" 4:3 lcd display, so I'll probably
stick with that for now. For video cards or vram, I'll wait and see
what turns up on ebay I guess.
Thanks to everyone for the help.
brian