loopsw1.asm

"DIGITAL SIGNAL PROCESSING WITH C AND THE TMS32 0C30"一书的附带程序

;LOOPSW1.ASM-TO TEST BOTH AIC INPUTS USING SERIAL PORT 1.CALLS AICCOMA  
        .TITLE  "LOOPSW1"       ;OUTPUT=INPUT
        .GLOBAL RESET,BEGIN,AICSET,AICSEC,AICIO_P,SPSET,IOPRI,IOAUX
        .SECT   "VECTORS"       ;VECTOR SECTION
RESET   .WORD   BEGIN           ;RESET VECTOR
        .SPACE  63              ;REMAINDER OF VECTOR SECTION
        .DATA                   ;ASSEMBLE INTO DATA SECTION
AICSEC  .WORD   1428h,1h,4A96h,67h ;SP AIC CONFIG DATA
        .TEXT                   ;ASSEMBLE INTO TEXT SECTION
BEGIN   LDP     SPSET           ;INIT DATA PAGE
        LDI     10h,R1          ;SERIAL PORT 1 OFFSET
        STI     R1,@SPSET       ;ENABLE SERIAL PORT 1
        CALL    AICSET          ;INIT PRIMARY AIC/TMS320C30
        LDI     0,R7            ;INIT R7 = OUTPUT 0
LOOP    CALL    IOPRI           ;USE PRIMARY INPUT IN
        LDI     R6,R7           ;OUTPUT R7=PRIMARY INPUT 
        CALL    IOAUX           ;USE AUXILIARY INPUT AUXIN
        LDI     R6,R7           ;OUTPUT R7=AUXILIARY INPUT
        BR      LOOP            ;LOOP CONTINUOUSLY
        .END                    ;END