Re: Still struggling with a 6551 (rockwell) IT Finally works

From: didier_at_aida.org Date: Sat, 28 Oct 2023 13:34:52 +0200 Message-ID: <dbe4a322-3633-4279-8462-f6d185d50a25_at_aida.org>

It finally works... bad rockwell 6551 chip

worked fine with a synertek 6551 and another rockwell 6551

On 27/10/2023 14:51, Gerrit Heitsch wrote:
> On 10/27/23 14:45, didier_at_aida.org wrote:
>> I'm still struggling with the Rockwell 6551
>>
>> I probably did something wrong but I can's see what
>>
>> RX / TX are connected
>>
>> CTS/RTS are not connected
>
> The CTS pin needs to be grounded when not used. See schematics for the 
> Plus/4.
>
>  Gerrit
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