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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!noc.near.net!wpi.WPI.EDU!jayscott
- From: jayscott@wpi.WPI.EDU (Jason Scott Anderson)
- Subject: Beginner A3000 questions on hardware
- Message-ID: <Bu9qLz.6x2@wpi.WPI.EDU>
- Sender: news@wpi.WPI.EDU (USENET News System)
- Nntp-Posting-Host: wpi.wpi.edu
- Organization: Worcester Polytechnic Institute
- Distribution: usa
- Date: Tue, 8 Sep 1992 16:46:46 GMT
- Lines: 29
-
-
- I tried posting this message yesterday, but it seems there was a bit of a
- mishap with the text editor, so I'll try again. I recently obtained a 3000
- as an upgrade from a 2000, and was examining the chip innards and comparing
- to that of the 2000.
- I had a few questions...There are some new VLSI chips I am unfamiliar with:
- Gary is now mounted differently, I am assuming to accomodate SCSI control..?
- There is a chip called RAMSEY near the RAM expansion, which I assume is to contorl
- RAM access requests..? There is also a VLSI chip which says DMAC on it, I'm
- guessing for DMA control..?
- Also, by the ZIP sockets for expansion, there looks like room for about 8
- DRAM chips - what goes there? Anything? Also, the Kickstart ROM is contained
- on 2 chips instead of 1...why was this done? (Guess: uncertain as to the final
- size of the ROM, explaining the room for 2 more ROM chips next to those.)
- CPU and FPU were surface-mounted (cute), but the big $20,000 question is: what
- is the long expansion slot near the edge of the motherboard labeled "Fast Bus" or
- something like that? It's a connector I'm very unfamiliar with...It looks almost
- like it's for a ribbon cable or something, but it all routes straight into the
- data bus, I think...What's it for? I've never heard of anything built to use
- that slot.
- Anyway, if anybody can confirm, deny, or expand upon any of my queries, I would
- be greatly appreciative. Thanks!
-
-
- --
- -----------------------
- jayscott@wpi.wpi.edu
- Jason Anderson
- -----------------------
-