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- Path: daffy.anetsrvcs.uwrf.edu!usenet
- From: jn42@ruby-14.UUCP
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Picasso and graphic garbage
- Date: 7 Mar 1996 22:19:31 GMT
- Message-ID: <4hnndj$h1o@daffy.anetsrvcs.uwrf.edu>
- References: <4gsnvu$s23@nyheter.chalmers.se> <54588Ke@babylon.pfm-mainz.de>
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-
-
- In article <54588Ke@babylon.pfm-mainz.de> rbabel@babylon.pfm-mainz.de (Ralph Babel) writes:
- > Jason Neus wrote:
- >
- > > Jonas Ekstr|m writes:
- > >
- > >> I suppose the Guru-ROM is needed for the NODMA, the new
- > >> GVPSCSICTRL alone isn't enough, is it?
- > >
- > > You can turn off DMA transfers with the regular GVP rom.
- >
- > No, you can't.
- >
- > The original gvpscsi.device would _always_ perform DMA.
- > There was _no_ _way_ to disable DMA prior to the Guru ROM.
-
- Ahem. According to the FaaastPREP 2.0 manual, page 36 -
-
- Mask -
- "The default value of 0xFFFFFFFE allows DMA transfers within the
- extended 16MB address range offered by GVP Series II and G-Force
- Accelerators. If your system cannot perform DMA access to
- Extended RAM use the value 0x00FFFFFE, instead"
-
- Sounds like disabling DMA to me.
- --
- ---------------------------------------------------------
- | "This is the tissue compressor/eliminator" - The Master |
- | |
- | Jason.D.Neus@UWRF.EDU Amiga 2000 w/GVP SCSI/68030 |
- ---------------------------------------------------------
-