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Date Posted: 22:15:58 06/17/01 Sun
Author: MISUTHiKU
Subject: Re: Sonnet comparison
In reply to: Saikee WONG 's message, "Sonnet comparison" on 01:52:26 06/17/01 Sun

Now "I" think that 3 upgrade cards listed below are the same.

Daystar Power Card 601
Apple Processor Upgrade Card
Sonnet Presto PPC/LC

But they are classified into two groupes.

Groupe(a)
Daystar Power Card 601 50/66(This may have Daystar logo mark)
Apple Processor Upgrade Card*(This may have Apple logo mark)
Sonnet Presto PPC/LC 50/66**(This seems to have Daystar logo mark)
* was OEMed from Daystar to Apple (or co-project)
** was baught by Sonnet from Daystar(Apple)

It's CPU speed is x2 logic board BUS speed.
If the logic board BUS speed is 25MHz, it is operated 25MHz x2 = 50MHz.
If the logic board BUS speed is 33MHz, it is operated 33MHz x2 = 66MHz.

Groupe(b)
Daystar Power Card 601 100(This has Daystar logo mark)
Sonnet Presto PPC/LC 100***(This seems to have Daystar logo mark)
*** was baught by Sonnet from Daystar

It's CPU speed is 100MHz.
If the logic board BUS speed is 25MHz, it is operated 25MHz x4 (x4 BUS speed).
If the logic board BUS speed is 33MHz, it is operated 33MHz x3 (x3 BUS speed).
These setting (x3 or x4) is changed by a jumper pin on the upgrade card.

The chips "341-S0095 to 0098" are the ROM chips.
They are under Apple's license.
(Also other Appple's custom chips are under the license.)

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