Re: Chip incompatibility?

From: William Levak (wlevak_at_cyberspace.org)
Date: 2002-09-07 06:36:31

If it was a 6522 problem, a whole column of keys would not work.  It
sounds like you need to take apart your keyboard and clean the contacts.

On Fri, 6 Sep 2002, Daniele Gratteri wrote:

> Hello, do you know if the GTE G65SC22 if 100% compatible with the MOS 6522
> VIA? I used to have one of these in my VIC-20 but today I have noticed that
> I cannot change the cursor color to white (CTRL-2) and that I can change it
> to black (CTRL-1) with some difficulty. But, for the other operations, it
> seems to be 100% ok.
> Maybe the problem is that the G65SC22 is a CMOS device and it hasn't some
> portions the original NMOS 6522 had or it is simply a defective chip?
>       __                                                  ____
>      /// Daniele Gratteri, Italian Commodore-Amiga user  / ___|____
> __  /// E-MAIL: daniele_gratteri@inwind.it   RITMO S75  | |   |___/
> \\\/// Nickname: FIAT1100D - ICQ: 53943994    FOREVER!  | |___|___\
>  \/// URL: http://spazioinwind.libero.it/danielegratteri \____|
> 
> 
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