[Coco] SDC's fixed; but not sure why? DANGEROUS ?

[Arthur Flexser]

My guess would be that one of your CoCo 3s has a 6309 and the other has a
6809.  Executing a disk ROM cartridge at $C000 instead of $C002 will likely
result in one or more illegal 6809 instructions being executed, which are
treated differently (error trapped) by the 6309 than by the 6809 (ignored).

Art

On Mon, Jul 9, 2018 at 11:45 AM, rietveld rietveld <rietveldh at hotmail.com>
wrote:

> I had all power off.
>
> But the strange thing is that the two SDC'S, with the jumper set to AUTO,
> did work on one of my coco3s,    even though it should not be able to
>
> Sent from my BlackBerry 10 smartphone.
>   Original Message
> From: coco at jechar.ca
> Sent: Monday, July 9, 2018 11:35 AM
> To: CoCoList for Color Computer Enthusiasts
> Reply To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] SDC's fixed; but not sure why? DANGEROUS ?
>
>
> I did not know that you could hotplug a COCO CARTRIDGE under any
> circumstances. I know you would probably wreck the wreck the CARTRIGE
> and Probably the COCO ( Especially if it had no "PROTECT" ) if
> you tryed to hotplug. So what are the rules for 1. Multipacks 2. 90's or
> Modern Multipack replacements?
>
>
> On 2018-07-06 23:55, rietveld rietveld wrote:
> > If anyone saw this video they will know that I had trouble with two
> > SDC'S working on all but one of my cocos
> >
> >
> > https://m.youtube.com/watch?v=RWLI32mXeKQ
> >
> > I was at a loss of ideas so I just blindly removed the jumper that
> > joins the centre (yes that's how we spell it in Canada) pin to the
> > Auto pin. These pins are supposed to be jumpered to allow the SDC to
> > run on the coco. I removed the jumper completely and now both SDC'S
> > auto start to SDCX on powerup.
> >
> > Strange but true
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>