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From: vincelee@tornado.Berkeley.EDU (Vincent H. Lee)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 2320 on an A500 and external drive port hardware interfacing
Message-ID: <1990Dec20.082254.16766@agate.berkeley.edu>
Date: 20 Dec 90 08:22:54 GMT
References: <9012120327.AA16486@yoda.eecs.wsu.edu> <49649@cornell.UUCP>
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In article <49649@cornell.UUCP> johnhlee@cs.cornell.edu (John H. Lee) writes:
>In article <9012120327.AA16486@yoda.eecs.wsu.edu> gheller@YODA.EECS.WSU.EDU (Geoffrey Heller - CS216) writes:
>>Hello C= and other hardware hackers out there!  Here are a few questions
>>which have been puzzling me for some time...
>>
>>Question #1:
>>  I have an A500 with Trumpcard 500 on it.  I am very interested in the
>>2320 graphics board but I'm told it is only available for the A2000.  Now,
>>I do have a bit of experience at hardware hacking and I would like to know
>>if it would be easy to add a 2320 onto my A500 bus.  If not, would anyone
>
>In theory, I believe it's possible.  In practice, I doubt it.  Either way,
>it's definately not easy.  The 2320 hangs off the video slot and picks
>signals off the video subsystem, not the system bus.

Don't listen to my brother.
I'm planning the same modification.  Issue 1.5 of AmigoTimes showed how to
connect a MicroWay Flickerfixer to a 500.  My guess is that connecting a
2320 should be similar, but I will have to see if it needs any additional
signals.

The flickerfixer just needed the 12 digital color signals (available on
buffer chips U40 and U41), horizontal and vertical sync (RP 403), a
clock signal (RP103), +5, and ground.  The 2320's mileage may vary.

>	John Lee		Internet: johnhlee@cs.cornell.edu
>The above opinions of those of the user, and not of this machine.

-Vince Lee