RE: 6523 sold on ebay apparently a box of 2

From: Christian Dirks <*Toast_r_at_Idealine.info*> Date: Thu, 24 Oct 2013 21:41:38 +0200 Message-ID: <5547c1db-eee6-44e4-befd-c47726382659@email.android.com> · Toast_r_at_Idealine.info

In the B / CBM2 series they are not used. The 6525 is used there.
It may be possible to replace the second 6525 (keyboard port) with a 6523.

didier derny <didier@aida.org> schrieb:

>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 dont 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 list

-- 
Christian Dirks
Toast_r@Idealine.info

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