Re: 6522 vs 6526 (was Re: 6502 to 8501: new details)

From: Christer Palm (
Date: 2002-02-26 17:11:01 wrote:
> The 6502->8501 design is based on my 6502->6510 design. And the 6510 has a
> data-direction register. (Although I wonder if it is used ever again aftre
> the first initialisation)

As a side note, we used to use a bit in the DDR for keeping track of 
whether the user had selected trainer-mode or not back in the good old 
days of "cracking" games. Never ever came across a single app that 
touches it.

Christer Palm

       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail 2.1.1.