>-----Original Message-----
>From: Wolfgang Lenerz [mailto:[EMAIL PROTECTED]]
>Sent: 27 February 2001 08:25
>To: [EMAIL PROTECTED]
>Subject: Re: [ql-users] Pointer read
>
>
>On 24 Feb 2001, at 12:23, Dave Westbury wrote:
>
>
>> Chicken and egg situation: If latest QDOS PTR_GEN (v1.71?) did return
IOP.RPTR
>> for an Event (bits 24-31 set in event vector), how would you send one?
You need
>> SMS.SEVT which is only in SMSQ 2.71+ (the only way to prevent ERR.NC
return?).
>>
>> I think you might mean latest QPTR was updated to deal with events. But
QPTR is
>> only a BASIC toolkit to access the IOP & WM calls. This only would have
made
>> QPTR able to use events under SMSQ v2.71+
>
>
>No, QPTR is just the basic interface to the PE, so it can't do more than
the PE
> itself... Actually I thought the PE / OS had been upgraded, but you're
right,
>I just checked the documentation and events don't work on QDOS,
>you need SMSQ for that.
>
>To get around that, FiFi uises a timeout on machines that don't
>support events.
>
>Wolfgang
Maybe this is where Richard Zidlicky's signal handling extension
http://www.itimpi.freeserve.co.uk/qdosdown.htm#SIGEXT
would come in. IIRC it's not just for C programs.
Jon.
