Date   : Mon, 09 Mar 2009 21:35:14 +0000
From   : splodge@... (Richard Gellman)
Subject: Knackered CoPro (Was: Disable tube?)

That sounds about right. You have a fault in the communication path 
between the host and parasite as detailed in my previous email.

Take a look around the co-pro board and the connectors and see if 
anything is being bridged or if anything has settled on any pins.  The 
fact that some paths are working leads me to believe its an address 
decoding problem on the co-pro board more than anything.

If your board has two jumper pins marked "IRQ" or "INT" trying jumpering 
them. It may be that you have one of the boards where IRQs can be 
disabled by jumper (some had these, some didn't).

-- Richard


me@... wrote:
> On 9 Mar 2009, at 19:09, Richard Gellman wrote:
>
>   
>> One thing you don't mention trying: *CON. NOTUBE with the co-pro
>> removed, then insert the co-pro (obviously with the power off) and
>> confirm it ignores the tube as expected. Then *CON. TUBE, ctrl+break  
>> and
>> see if it comes back as expected.
>>     
>
> Yes, it does.
>
> As long as it's set to NOTUBE, nothing seems to break, even if you put  
> the tube back in.
>
> It's only if you do *CO. TUBE that things fall apart.
>
> Currently I've put the copro back in but left it on NOTUBE.
>
> ~DG
>
>
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