Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!purdue!decwrl!shlump.dec.com!frambo.dec.com
From: balzer@frambo.dec.com (Christian Balzer)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Real World Amigas?
Message-ID: <3265@shlump.dec.com>
Date: 29 Jun 89 15:38:47 GMT
Sender: news@shlump.dec.com
Organization: DEC SWAS Frankfurt/W.Germany
Lines: 40


In article <17837@swrinde.nde.swri.edu>, kent@swrinde.nde.swri.edu (Kent D. Polk) writes...
> 
>Hmmm, the product sheet from ASDG indicates a Programmed I/O rate of 70
>Kbytes/Second(Typ.) and a DMA I/O rate of 300 Kbytes/Second(Typ.).
>Also, indicates a SBX Compliance of "D8 DMA (Eight Bit Module With DMA
>Support)". Sounds to me like the iSBX module supports DMA ??
> 
Uh, I guess I should make more clearly statements, let me re-phrase
my first answer:
The TwinX card can't do DMA to/on the Amiga bus. Period. A shame...
BUT... you can set it up in a way that DMA requests from the mounted
iSBX modules (which of course support DMA) triggers an interupt in
the Amiga that could/should call a fast data transfer routine.
Better phrased???

> 
>What kind of functions are provided?  I still haven't gotten around to
>writing a letter request. I kinda was hoping they would respond to my
>telephone and email requests.
> 
Dunno, I might be able to tell you in a few days, but you should keep
firing shoots at ASDG. ;-)

> 
>Does the new BridgeBoard software have adequate
>support for inter-system communications such as this? Is it fast?
> 
Yup, it has such support, although I can't comment on speed or adequacy.
Become a registered developer. Get the Janus 2.2 Gamma 2 developer disk
that was distributed at the SF DevCon.

Regards,

- <CB>
--  _  _
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