Re: New CBM-II discoveries

From: Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de>
Date: Tue, 26 Jun 2018 18:14:49 +0200
Message-ID: <fe27e18d-e1dc-e372-b380-b6dafff6ba60@laosinh.s.bawue.de>
On 06/26/2018 06:05 PM, smf wrote:
> http://archive.6502.org/datasheets/mos_6523_tpi_preliminary.pdf
> 
> On 26/06/2018 15:59, Gerrit Heitsch wrote:
>> On 06/26/2018 06:52 AM, vossi wrote:
>>> A problem is the 6523 - Its very hard to find.
>>> It is only available from mos!
>>
>> Anyone have a datasheet for the 6523? I still think it might be 
>> possible to use 2 6522 plus some extra logic to recreate the register 
>> map of a 6523.
>>
>>  Gerrit
>>
>>
> 

Ok, so the 6523 is just 3 direction registers and 3 data registers. That 
should be possible with two 6522 and some logic that adjusts the /CS and 
RS signals for them properly.

  Gerrit
Received on 2018-06-26 19:00:54

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