Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!swrinde!kent
From: kent@swrinde.nde.swri.edu (Kent D. Polk)
Newsgroups: comp.sys.amiga
Subject: Re: Amiga in the real world - a real application
Message-ID: <17615@swrinde.nde.swri.edu>
Date: 21 Jun 89 17:09:43 GMT
References: <3100@shlump.dec.com>
Reply-To: kent@swrinde.UUCP (Kent D. Polk)
Organization: Southwest Research Institute, San Antonio, Texas
Lines: 51



In article <3100@shlump.dec.com> balzer@frambo.dec.com (<CB> aka Christian Balzer) writes:
>In article <24218@srcsip.UUCP>, carpent@coltrane.SRC.Honeywell.COM (Todd Carpenter) writes...
>> 
>>*GOOD NEWS*

>>2) What about 488 cards?  Are they available?

Both ASDG & ACDA have GPIB (IEEE-488) cards.  The ASDG card is a little
more expensive (it is an iSBX-type module which mounts in one of the
two iSBX connectors in ASDG's Twin-X board , so you have to buy both),
but you have much more flexibility. The ASDG board appears to support
DMA I/O, while the ACDA board does not. The ASDG board also allows a
higher programmed I/O transfer rate than the ACDA board.

The ASDG board appears to be the better of the two for my uses -
from a hardware standpoint. However, I can't seem to get any info on
software support for the ASDG board, so I have now way to compare.

>Perry reads this group and will probably bury you under informative 
>material. :-)

Actually, I have tried to get technical info (anything past the sales
brochures) out of ASDG for some time - to no avail. I have called &
only got the sales brochures (looked pretty good, btw).  I have also
sent email requests 3 times to Perry K. & Aaron Avery at ASDG, but have
yet to receive a reply, so I guess either email isn't getting through,
or ASDG requires requests via U.S. mail.  I guess I'll be writing a
letter :-(

>The compatiblity is VERY high (about 98%) and the bus itself is 100%.
>You may plug in up to 3 PC cards, if you solder two more slots in, all of 'em
>could be 16bit AT style ones. You need a bridgeboard to get to the PC slots. 

Question: What modes of access to the PC bus are available from the
Amiga side? Do I have to involve the 80xx.x in the process, or can I
read AT ports directly?

Also, wasn't there supposed to be something like a 'wedge' card in
development that would allow the Amiga to directly access the PC bus?

Thanks,

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       Kent Polk - Southwest Research Institute
 {cs.utexas.edu, gatech!petro sun!texsun}!swrinde!kent
              kent@swrinde.nde.swri.edu
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       "Anything worth doing is worth overdoing"
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