Sigh! Last night, I was doing some work on the "next exciting article" in the Pointer Environment series of Assembly programming for Ql Today.
Basically, in the application window hit routine, I was attempting to print out all the meaningful data about the registers when the routine is called. Try as I might, the keystroke in D2.B would not print, unless a special case of -1, 0, 1 or 2. I spent ages looking, tracing with JMON and so on, I could see the keycode in D2.B but it simply refused to print when copied to D1.B. I was using IO_SBYTE/IOB_SBYT to print the keycode. There were never any errors seen after "printing" the keystroke as the trap always returned with D0=0 and the Z flag set. Eventually, I gave up and decided to pen a "help me" email to the list. While doing exactly that, I typed in a bit of the code and suddenly realised that I was a pillock! I was calling trap #1 rather than trap #3 - instead of printing a byte to a channel, I was force removing a (thankfully non-existent) job! Duh! Cheers, Norman. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
