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From: kskelm@happy.colorado.edu
Newsgroups: comp.sys.amiga.hardware
Subject: Re: ALSO seeking DMA peripheral controller example!
Message-ID: <1991Apr5.110637.1@happy.colorado.edu>
Date: 5 Apr 91 17:06:37 GMT
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In article <21741@shlump.nac.dec.com>, plouff@kali.enet.dec.com (Wes Plouff) writes:
> 
> Have there been any published examples of Amiga peripherals using DMA?  
> Or, as an alternative, are schematics available in technical or repair
> manuals for any of the popular DMA hard drive controllers?  Enquiring
> minds want to  know the relative hardware complexity of taking over the
> bus.

     So does THIS enquiring mind!
 
     It seems like I read somewhere in the docs that one should NOT take
over the bus [for any length of time?].  If I built a card with a DMA
controller, can I be certain that I am not goofing up, say, some OTHER device
(like a HD) by taking the bus over for, say, (worst case) 128,000 cycles (a
large RAM transfer)?
 
     My kingdom for some docs.....
 
           Kevin