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Date Posted: 21:38:55 05/25/01 Fri
Author: MISUTHiKU
Subject: Re: Memory limits on Mystic
In reply to: Chris Lawson 's message, "Re: Memory limits on Mystic" on 16:54:39 05/25/01 Fri

>I think what Mr. Watanabe is referring to is the banking in the SIMM itself. Some SIMMs are single-banked; some are double-banked.

Yes,that's right.
Very thank you, Mr.Lawson.
You often helps me when I face to the difficulty with the foreign lamguage.

>the Daystar card's ROMs may only be able to deal with 16MB per bank in a SIMM, so a 32MB double-banked SIMM would be the only way to get 32MB in the Mac.

Yes, this is what I want to explain.
I didn't know the Sonnet's PPC upgrade card for LC 575.

----
It seems that LC575 memory controller can control 4 banks potentially.
But one of them is not used (there is no circuit for this).
The rest is 3.
#1 is used for on-board memory.
#2 & #3 are use by SIMM slot.

Logically, if someone modify address line, someone may be able to get 16(MB)*4(bank)=64MB with Daystar Power Card 601 66/80,100 (incl. Apple's) or Sonnet's.

Mr. Gabezing's (see another tree bellow here) was the good site to get the informations about this.
But his site often moves to another place.
These are the Japanese site to explain this.
(And to read Japanese page, please refer to the "Link" section of my web page. Please try.)
http://homepage.mac.com/inachan/mac/macpup/simmstak/simmstak.html(Inachan's page)
http://gabezing.sytes.net/memoryslot.html(Gabezing's page:General)
http://gabezing.sytes.net/about64MBSIMM.html(Gabezing's page:64MB SIMM)

MISUTHiKU(S.Watanabe)

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Replies:

Re: Memory limits on Mystic -- Jeffrey Grad, 19:12:08 05/26/01 Sat

Re: Memory limits on Mystic -- Bruce (in Orlando), 07:54:22 05/29/01 Tue

Re: Memory limits on Mystic -- MISUTHiKU, 03:04:21 05/30/01 Wed

Re: Sonnet PPC Upgrade Card -- Bruce (in Orlando), 11:58:07 06/11/01 Mon

Re: Sonnet PPC Upgrade Card -- Jeffrey Grad, 00:17:15 06/12/01 Tue
- Re: 128MB 72 pin, anyone tried ? -- Saikee WONG, 19:33:28 06/20/01 Wed