Frankly, I just remember that they existed from a presentation and Hannover Messe 1981 Where some new chip were presented with the cbm 700. (first floor of commodore booth) The on ebay are marked MOS MPS6523 2871 I don’t remember exactly in what they were used I think it was in one of the B series too -----Message d'origine----- De : owner-cbm-hackers@musoftware.de [mailto:owner-cbm-hackers@musoftware.de] De la part de Gerrit Heitsch Envoyé : jeudi 24 octobre 2013 21:29 À : cbm-hackers@musoftware.de Objet : Re: 6523 sold on ebay apparently a box of 2 On 10/24/2013 09:22 PM, didier derny wrote: > Hi, > > Not sur what it really is but they have a little box containing 2 > chips > mps6523 > > If someone is interested… > > http://www.ebay.fr/itm/RARE-MOS-Technology-MPS6523-Micro-Pair-in-Origi > nal-Box-NOS-NIB-2781-2-pieces-/251289234205?pt=LH_DefaultDomain_0&hash > =item3a82016b1d > Where was the 6523 used? I read somewhere you could use it in a 1551 since it doesn't use the IRQ-capability of the 6525, but since the 1551 is running at 2 MHz, it would have to be the 6523A. Gerrit Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2013-10-24 20:01:22
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