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- Path: informatik.tu-muenchen.de!brunner
- From: brunner@informatik.tu-muenchen.de (Oliver -IR- Brunner)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re^2: Memory limit on A500?
- Date: 15 Jan 1996 13:09:03 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4ddjlf$c17@sunsystem5.informatik.tu-muenchen.de>
- References: <4d9lds$29e@news1.wolfe.net> <Pine.BSD/.3.91.960113203501.25436D-100000@ecf2.puc.edu>
- NNTP-Posting-Host: hphalle4a.informatik.tu-muenchen.de
- Originator: brunner@hphalle4a.informatik.tu-muenchen.de
-
-
- In article <Pine.BSD/.3.91.960113203501.25436D-100000@ecf2.puc.edu>, ":=Rob=:" <rldickin@puc.edu> writes:
- |>
- |> On 14 Jan 1996, Scott McDermott wrote:
- |>
- |> > How much memory will my A500 handle? I'm getting a 68020 accelerator
- |> > with 4 megs, if that makes a difference.
- |>
- |> The Amiga 500 has the capability of having a maximum of 2MB of CHIP RAM
- |> (under extreme conditions) plus a maximum of 8MB of FAST RAM. Your
- |> accelerator memory will take part of the 8MB FAST RAM. This is all
- |> assuming standard conditions and no monkey business. :=Rob=:
-
- There is no (AFAIK!) A500 accelerator, which locates it's memory in the
- ZII autoconfig space (like the A2630 for ex.), so these 4MB on
- the accelerator are above the normal memory map of an A500, which is
- limited by the reduced adress bus of the 68000/68010 and
- will *not* take part of teh 8MB fast ram.
- This has the advantage, that you can (maybe:) still use all standard (24bit)
- memory expansions with the accelerator, but has the great disadvantage
- that an external (this means not on the accelerator) SCSI controller
- (the A590 for ex.) will loose more than half of its speed preformance.
-
- --
- ----------------------------------------------------//----------------------
- | TUM: oliver.brunner@informatik.tu-muenchen.de | \\// Oliver -IR- Brunner |
- | InterFace Connection: oli@ifconnection.de |ExCertified Amiga Developer |
- | http://www.informatik.tu-muenchen.de/~brunner/| Typ-I since Sept'94 |
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