vectors.asm

TMS320VC5416的片上定时器使用

;
;  Copyright 2000 by Texas Instruments Incorporated.
;  All rights reserved. Property of Texas Instruments Incorporated.
;  Restricted rights to use, duplicate or disclose this code are
;  granted through contract.
;  U.S. Patent Nos. 5,283,900  5,392,448
;
; "@(#) DSP/BIOS 4.00 03-16-00 (barracuda-e06)"
;;  Copyright 1999 by Texas Instruments Incorporated.
;;  All rights reserved. Property of Texas Instruments Incorporated.

;;  Restricted rights to use, duplicate or disclose this code are
;;  granted through contract.
;;  U.S. Patent Nos. 5,283,900  5,392,448
;;
;; "BIOS-C54x ??"

;
;  ======== vectors.asm ========
;  Plug in the entry point at RESET in the interrupt vector table
;
;
;  ======== unused ========
;  plug inifinite loop -- with nested branches to
;  disable interrupts -- for all undefined vectors
;

        .sect ".vectors"

        .ref _c_int00           ; C entry point

        .align  0x80            ; must be aligned on page boundary

RESET:                          ; reset vector
        BD _c_int00                             ; branch to C entry point
        STM #200,SP                             ; stack size of 200
nmi:    RETE                    ; enable interrupts and return from one
                NOP
                NOP
                NOP             ;NMI~

                ; software interrupts
sint17 .space 4*16
sint18 .space 4*16
sint19 .space 4*16
sint20 .space 4*16
sint21 .space 4*16
sint22 .space 4*16
sint23 .space 4*16
sint24 .space 4*16
sint25 .space 4*16
sint26 .space 4*16
sint27 .space 4*16
sint28 .space 4*16
sint29 .space 4*16
sint30 .space 4*16

int0:   RETE
                NOP
                NOP
                NOP
int1:   RETE
                NOP 
                NOP
                NOP
int2:   RETE
                NOP
                NOP
                NOP
tint:   B       _time
       .ref _time 
                NOP
                NOP
rint0:  RETE
                NOP
                NOP
                NOP
xint0:  RETE
                NOP
                NOP
                NOP
rint1:  RETE
                NOP
                NOP
                NOP
xint1:  RETE
                NOP
                NOP
                NOP
int3:   RETE
                NOP
                NOP
                NOP
                .end