mikeoro@hubcap.clemson.edu (Michael K O'Rourke) (10/30/89)
I am trying to create a init which will patch getnextevent using the jGNEfilter
documented in the tech notes. It mentions that a pointer to the event
record is in register A1. I tried some assembly in LSC to move the
address to a local variable, but am having problems.
The code i tried was :
Eventrecord *theEvent;
asm {
move.l theEvent,A1
}
When i check theEvent, there is NEVER a mouseDown or mouseUp. (I had a sysbeep
in). I don't really know assembly, so could someone tell me what is wrong
with what i am trying to do? How can i properly get to the eventrecord
so that i may change or modify its contents?
Michael O'Rourkechewy@apple.com (Paul Snively) (10/31/89)
In article <6901@hubcap.clemson.edu> mikeoro@hubcap.clemson.edu (Michael K O'Rourke) writes: > It mentions that a pointer to the event > record is in register A1. I tried some assembly in LSC to move the > address to a local variable, but am having problems. > > > The code i tried was : > > Eventrecord *theEvent; > > asm { > move.l theEvent,A1 > } > > When i check theEvent, there is NEVER a mouseDown or mouseUp. (I had a sysbeep > in). I don't really know assembly, so could someone tell me what is wrong > with what i am trying to do? How can i properly get to the eventrecord > so that i may change or modify its contents? Oops. Try "move.l A1,theEvent". In other words, you got the parameters to the move instruction reversed. Don't feel badly; this was a big stumbling block on the 680x0 to me for a long time, since I moved to this family from the Z-80! (Anyone else here remember the mighty Z-80)? __________________________________________________________________________ Just because I work for Apple Computer, Inc. doesn't mean that they believe what I believe or vice-versa. __________________________________________________________________________ C++ -- The language in which only friends can access your private members. __________________________________________________________________________
allbery@NCoast.ORG (Brandon S. Allbery) (11/01/89)
As quoted from <4952@internal.Apple.COM> by chewy@apple.com (Paul Snively): +--------------- | long time, since I moved to this family from the Z-80! (Anyone else here | remember the mighty Z-80)? +--------------- Yup; it was the first processor I worked with (the second being a 6502 on an OSI Superboard II, the third being the 68000 on "ncoast" revisions 1-4). ++Brandon -- Brandon S. Allbery: allbery@NCoast.ORG, BALLBERY (MCI Mail), ALLBERY (Delphi) uunet!hal.cwru.edu!ncoast!allbery ncoast!allbery@hal.cwru.edu bsa@telotech.uucp *(comp.sources.misc mail to comp-sources-misc[-request]@backbone.site, please)* *Third party vote-collection service: send mail to allbery@uunet.uu.net (ONLY)* >>> Shall we try for comp.protocols.tcp-ip.eniac next, Richard? <<<