[Coco] SDC and T2 conflict? RESOLVED

[K. Pruitt]

----- Original Message ----- 
From: "Gene Heskett"
Sent: Monday, June 29, 2015 4:19 PM
Subject: Re: [Coco] SDC and T2 conflict? RESOLVED


> On Monday 29 June 2015 19:02:36 K. Pruitt wrote:
>> Conflict resolved.
>>
>> If /T2 is being used, the SDC appears to be required to be in slot 4. 
>> No other slot worked for me. With the SDC in slot 4 and my disto
>> controller in slot 3 I can access /T2 without issue.
>>
>> In any other slot, any command sent to /SD0 or /SD1 will generate
>> nothing but an error 244 if I've sent anything to /T2.
> 
> Humm, looks like the sc6551 driver needs to clean up after itself.  Or 
> every driver that expects their card to be in an MPI, be trained to at 
> least restore its own default slot by calling the slot init routine 
> before it does anything else when arriving at itself due to an IRQ, 
> preferably obtained from the descriptor.
> 
> This housekeeping has always been an afterthought, some drivers do, but 
> more don't.  Maybe its time we fixed that?  But it would be less code 
> growth if a new call was defined, and incorporated into krn2, maybe even 
> krn is room could be found.  The driver loads A with the slot, calls the 
> new call, which then writes it to $FF7F.  Call it F$SSWrtSlt.
> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>
> 

I knew I'd end up looking at source code.  lol

What you describe would explain the behavior I am seeing.

Thanks Gene.