Re: Strange 8255 behavior

From: Mia Magnusson <mia_at_plea.se>
Date: Mon, 18 Jun 2018 20:08:03 +0200
Message-ID: <20180618200803.0000553e@plea.se>
Den Mon, 18 Jun 2018 19:07:26 +0200 skrev Michał Pleban
<lists@michau.name>:
> Mia Magnusson wrote:
> 
> > What is needed in the 6526 besides the standard I/O ports?
> 
> In this specific case you also need to generate interrupt on the
> positive edge of the FLAG pin.

It's probably not worth the effort, but some hardware that remaps
the address and data bus between a 6522 and the CPU might make a 6522
be compatible enough to work with the kernel handshake code.

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Received on 2018-06-18 21:02:09

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