From: William Ove <[EMAIL PROTECTED]>
I just picked up a MACh Speed G3. It is very much and older one with
rotary switches for the settings. I got it with switch 2 set to 3 and
switch one set to 7. As I read the chart that produces a 266MHz G3
speed on a 41 MHz bus.
I was thinking of giving it a try in my Mach V 8600 which currently
has a 300MHz 604ev. From looking over your post I see that you state
a Mach V machine always runs with a 50MHz bus. It appears from he
chart that this upgrade card does not support that bus speed or at
least can not be set to use that bus speed,
It's the processor daughtercard that sets bus speed, not the
motherboard. The Kansas boards (for Mach V) tend to tolerate higher
bus speed settings than the Nitro boards of the earlier 8500-9600
models. If your MACh Speed chart has settings in the "neighborhood" of
50 MHz you might try one or more of those.
Any one out there familiar with this card. Does it require software
to make it work? What is the oldest OS that it would support? Over
all I am not sure that my Mach V machine needs much upgrading for it
is very nice as is.
I haven't seen one of those old rotary switch cards in ages. IIRC they
were the very first MACh Speed G3's, which would mean they were
released at about the same time as OS 8. I think they *may* support
System 7.5.x or newer, but certainly nothing older than that. OS 8.1
is probably the oldest *practical* OS for use with those cards.
Gene Osburn
Friends don't let friends do Windows
ebay ID: mac4gman
Zip 99204
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