Post by thread:[PIC]:Re: Stack.

Move to an 18C part. Read the posting from last week, where the concept is detailed. Andy Jonathan Philpott <spam_OUTj_philpottTakeThisOuTYAHOO.COM> on 07/07/2000 07:37:41 AM Please respond to pic microcontroller discussion list <.....PICLISTKILLspam@spam@MITVMA.MIT.EDU> To: PICLISTKILLspamMITVMA.MIT.EDU cc: (bcc: Andrew Kunz/TDI_NOTES) Subject: Stack. One night, while i was in a state of total boredom, i started to think about writing a PicOS, this is, of course, madness, and i have started my medication. I gave up after 5 minutes of code due to one big problem: the stack. i was using the clock interupt to control task switching, and to switch tasks correctly, id have to get the return address from the stack when the interupt happened, store it away somewhere, and switch to another task (perhaps using a previously stored return address). But, from reading the 16c84 Microchip datasheet, i am told the stack pointer cannot be written or read to.... is there a way around this? or should i go back to writing my name on the padded walls with a pencil in my teeth? Jon __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/ -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.