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- Newsgroups: comp.sys.amiga.hardware
- Path: thor.cf.ac.uk!news
- From: Kyle Miller <millerka@cf.ac.uk>
- Subject: Re: Strange A4000 Problem
- Sender: news@cf.ac.uk (USENET News System)
- Message-ID: <DLzy85.BFp@cf.ac.uk>
- Date: Tue, 30 Jan 1996 13:45:41 GMT
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- References: <dieter.23vn@prosys.co.at> <1583.6530T72T665@mailhost.cyberhighway.net>
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- Organization: Cardiff University of Wales
-
- madmaxx@mailhost.cyberhighway.net (Marv Birkinbine) wrote:
- >>Hello
- >
- >>I have a strange Problem with my A4000:
- >
- >>It`s working quite well, without zorro cards. If I install zorroII
- >>Cards which are not using DMA (like a Tandem Conrtoller, or the
- >>A2410 Tiga card using a non DMA software), everything is working fine.
- >>If I install a Picasso II, the display is displaing a software error,
- >>as soon as binddrivers is starting the picasso software out of the
- >>expansion drawer.It`s not a picasso fault, after installing a GVP SeriesII
- >>SCSI HDcontroller,I got the same problem when GVPscsictrl is accessing the
- >>Harddisk ...
- >
- >>Changing the buster didn`t help :-(
- >
- >>What else can effect the ZorroII DMA ????
- >
- >>Thanks for your help
- >> Dieter
- >
- >Dieter, your problem is not in the ZorroII DMA. the two boards you mention
- >require a stable power berst and a sustained power sig. to function properly
- >the A4000 desktop power supply in not stable and only has a peak of 4.6 V
- >and is only 135w. barly enough to power the motherboard you need 5.5 peak 4.9
- >constent. and a min. 200w-300w.
- >
- >marv
-
- Well, I have an A4000 desktop with a 135W power supply and can quite happily use the
- Picasso II, GVP 4008 SCSI, Tandem IDE CARD with an internal CDROM and two floppies. No
- power supply problems here.
-
-
-