In a message dated 16/11/2004 20:17:15 GMT Standard Time, [EMAIL PROTECTED] writes:
No no no That can not work. PROforma/ProWesS already do some trickery to increase the stack for supervisor programs (to allow C code to be used). That is the bit which caused problems on Minerva for a long time. Anyway, general PROforma/ProWesS code cannot run in supervisor mode, it will only crash the machine. However, you could just throw the in a pipe and have a resident job checking for that pipe once in a while and print the stuff. The main problem with this solution is figuring out a mechanism to make sure that two programs which try printing at the same time don't get their data mangled. Kind regards, Joachim OK, I see - however, surely that is where the new device driver could come in - it could take data sent to the PAR device (or whatever it is to be called), and through it into the pipe - if it presents a <START DATA> tag and <END DATA> tag, the Proforma Filter program which would be watching this pipe, would know when data started and ended.... Presumably, if a second program tried to print before the pipe was emptied by the Proforma Filter, the data would just be tagged on the end (or held in a queue) by the device driver. -- Rich Mellor RWAP Services 26 Oak Road, Shelfield, Walsall, West Midlands WS4 1RQ TEL: 01922 691607 Visit our website at URL:http://www.rwapsoftware.co.uk Stuck with ordinary dial up internet connection ?? Read our review of internet accelerators and broadband at: URL: http://www.rwapadventures.com/Services/reviews.html _______________________________________________ QL-Users Mailing List http://www.quanta.org.uk/mailing.htm
