> The first 96 pins are only 16 bits, which is how they made
> backwards-compatible
> cards for the LC III PDS slot.
> --
>
> the pickle
> Daystar marketed an extension hood for earlier LCs (LC,II,III,III+
> AFAIK) that allowed you to use a PDS card as well as a Turbo040 card in
> the machine. Theoretically old PDS cards work in the LCIII-PDS slot,
> which is true for standard interface hardware like ethernet, graphics
> and the like, but possibly not so for accelerators.
>
> --
> Mark Benson
When I said "Turbo 040, I meant Value 040...sorry. Of course a Turbo 040
will work (with the appropriate adaptor.)
I had a Performa 400, in the days when the Value 040 was current
merchandise, & so I was interested in acceleration (I still have it, but
it's a 475 now -- soon to be with FPU -- wish me luck not breaking any
pins!) I only recall the card being advertised for the 16-bit
motherboards. Maybe it will work with the LC III boards, who knows?
But I suspect it's probably hard-wired for a 16-bit bus. Some 040 (& 030)
upgrade boards for the 10-MB-challenged Macs had an option for extra RAM
on the upgrade, & it's hard to see how they would accomodate 16 & 32 bit
access simultaniously. (Maybe some of the boards *only* used the
daughtercard RAM, I don't know...)
--
Over,
Jutso
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