R: C65 boot-up sequence

From: carlopastor_at_libero.it
Date: Mon, 5 Dec 2011 21:26:00 +0100 (CET)
Message-ID: <10581956.8309871323116760447.JavaMail.root@wmail37>
Dear Friends,

Commodore 65 boot up in C64 mode if there is a reason to start in C64 mode. 
For example if you press while booting the Commodore key, or if there is a C64 
cartridge inserted. Otherwise it starts in C65 mode. In C65 mode with GO64 
command you'll enter C64 emulated mode.

Take care


>----Messaggio originale----
>Da: msmakela@gmail.com
>Data: 05/12/2011 20.49
>A: <cbm-hackers@musoftware.de>
>Ogg: C65 boot-up sequence
>On Mon, Dec 05, 2011 at 04:18:07PM +0100, silverdr@wfmh.org.pl wrote:
>>>>Doesn't the C65 boot up in 64 mode? If I remember the documentation 
>>>>correctly, the KERNAL would do some VIC-III "register knocking" to 
>>>>switch to the C65 mode.
>>Since I don't have one, I find it hard to verify but from what I saw on 
>>youtube, it boots into "native mode" and can be brought into C64 mode 
>>in at least one way similar to C128: by issuing the GO64 command.
>I have never seen a C65 either, but I seem to remember from the manual 
>that I read in 1996 that the hardware boots up in 64 mode. The KERNAL 
>would switch it to the "native" mode by writing some magic to the 
>VIC-III registers. This was supposedly in order to improve compatibility 
>with cartridges and the like.
>	Marko
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Received on 2011-12-05 21:00:04

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