Bootloader Code Listing (V4.0)
; Restore ST0 and ST1. Note OBJMODE is
; the only bit not restored to its reset state.
; OBJMODE is left set for C28x object operating
; mode.
;
; ST0 = 0x0000 ST1 = 0x0A0B
; 15:10 OVC = 0 15:13 ARP = 0
; 9: 7 PM = 0 12 XF = 0
; 6 V = 0 11 M0M1MAP = 1
; 5 N = 0 10 reserved
; 4 Z = 0 9 OBJMODE = 1
; 3 C = 0 8 AMODE = 0
; 2 TC = 0 7 IDLESTAT = 0
; 1 OVM = 0 6 EALLOW = 0
; 0 SXM = 0 5 LOOP = 0
; 4 SPA = 0
; 3 VMAP = 1
; 2 PAGE0 = 0
; 1 DBGM = 1
; 0 INTM = 1
;-----------------------------------------------
MOV *SP++,#0
MOV *SP++,#0x0A0B
POP ST1
POP ST0
;------------------------------------------------
; Jump to the EntryAddr as defined by the
; boot mode selected and continue execution
;-----------------------------------------------
LRETR
;eof ----------
;; TI File $Revision: /main/1 $
;; Checkin $Date: May 2, 2006 21:10:16 $
;;###########################################################################
;;
;; FILE: ITRAPIsr.asm
;;
;; TITLE: 280x Boot Rom ITRAP ISR.
;;
;; Functions:
;;
;; _ITRAPIsr
;;
;; Notes:
;;
;;###########################################################################
;; $TI Release:$
;; $Release Date:$
;;###########################################################################
.def _ITRAPIsr
;-----------------------------------------------
; _ITRAPIsr
;-----------------------------------------------
;-----------------------------------------------
; This is the ITRAP interrupt service routine for
; thet boot ROM CPU vector table. This routine
; would be called should an ITRAP be encoutered
; before the PIE module was initalized and enabled.
;
90 Bootloader Code Overview SPRU722C – November 2004 – Revised October 2006
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