topic Re: NOT RETURNING FROM SUB ROUTINE (PAGE SWITCHING) in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/NOT-RETURNING-FROM-SUB-ROUTINE-PAGE-SWITCHING/m-p/203695#M8272 <HTML><HEAD></HEAD><BODY><P>Does your asm routine use RTC instruction to return? Or indeed RTS?</P></BODY></HTML> Tue, 07 Feb 2012 18:08:16 GMT kef 2012-02-07T18:08:16Z NOT RETURNING FROM SUB ROUTINE (PAGE SWITCHING) https://community.nxp.com/t5/S12-MagniV-Microcontrollers/NOT-RETURNING-FROM-SUB-ROUTINE-PAGE-SWITCHING/m-p/203694#M8271 <HTML><HEAD></HEAD><BODY><P>Hello everyone,</P><P>&nbsp;</P><P>I am using code warrior 5.1 and MC9S12C128.PE MULTILINK DEBUGGER.</P><P>&nbsp;</P><P>&nbsp;</P><P>My application calls as subroutine which is in assembly file (page 0 /ROM C000) FROM PAGE 38.</P><P>&nbsp;</P><P>When i do single step PPAGE is updated with 0 and after completion of subroutine the control is not coming back to PAGE 38(PAGE SWITCING).</P><P>I would get ILLEGAL_BP error.</P><P>i have enough stack space.</P><P>&nbsp;</P><P>Can someone tell what would be the problem.</P><P>&nbsp;</P><P>Thanks,</P><P>Embitel.</P></BODY></HTML> Tue, 07 Feb 2012 16:14:12 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/NOT-RETURNING-FROM-SUB-ROUTINE-PAGE-SWITCHING/m-p/203694#M8271 embitel 2012-02-07T16:14:12Z Re: NOT RETURNING FROM SUB ROUTINE (PAGE SWITCHING) https://community.nxp.com/t5/S12-MagniV-Microcontrollers/NOT-RETURNING-FROM-SUB-ROUTINE-PAGE-SWITCHING/m-p/203695#M8272 <HTML><HEAD></HEAD><BODY><P>Does your asm routine use RTC instruction to return? Or indeed RTS?</P></BODY></HTML> Tue, 07 Feb 2012 18:08:16 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/NOT-RETURNING-FROM-SUB-ROUTINE-PAGE-SWITCHING/m-p/203695#M8272 kef 2012-02-07T18:08:16Z