Thank you, I'll try these possibilities. Support for 4th and 5th mouse button might be useful for someone but I don't have such mouse and don't remember if I have ever seen it . But very interresting would be some mouse protect mode interface. Something similar like VESA VBE protect mode interface is. Because moving mouse eats much CPU power in protected mode.
----- Original Message ----- From: "Eric Auer" <[EMAIL PROTECTED]> To: <freedos-devel@lists.sourceforge.net> Sent: Wednesday, June 13, 2007 2:39 PM Subject: Re: [Freedos-devel] Calling a software interrupt from hardware interrupt > > Hi Ladislav, > > > Is possible to call a software interrupt from hardware interrupt? I > > want to call INT33h/AX=3 from INT 1Ch handler. And this all works in > > protected mode. I tried to call INT33h through DPMI service 31h but > > it crashed. Is it possible at all? > > Yes, sure, but you must avoid calling int33 while int33 is already > active. The usual way to do this is: > > - write an own int33 handler which just calls the original int33 > handler but which increments a counter before calling the > old int33 and decrements it when the old int33 returns. Make > sure not to mess with the flags returned by the old int33. > > - write a test in your int1c handler which makes it avoid the > int33 call if the counter is found to be nonzero > > - you could also write a test in your int33 handler to do the same, > but it is more polite to make only your int1c handler wait and > not all int33 users > > - the int1c handler should not really WAIT until int33 is ready. > instead, it should skip over the whole mouse stuff when int33 > is busy... there will always be a next int1c clock tick :-) > > Of course things might get more complicated because you use > protected mode (do you need it?), but the idea stays the same. > > Eric > > PS: Would you be interested in support for 4th and 5th PS2 mouse > buttons for your mouse handler? :-) > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
