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[/] [eco32/] [trunk/] [hwtests/] [serial/] [sertest/] [echo0.s] - Blame information for rev 317

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Line No. Rev Author Line
1 14 hellwig
;
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; echo.s -- test the serial interface
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;
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        .set    sba,0xF0300000  ; serial base address
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        add     $8,$0,sba        ; set serial base address
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L1:
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        ldw     $9,$8,0          ; load receiver status into $9
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        and     $9,$9,1         ; check receiver ready
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        beq     $9,$0,L1 ; loop while not ready
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        ldw     $10,$8,4        ; load receiver data into $10
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        add     $10,$10,0x5C
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        and     $10,$10,0xFF
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L2:
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        ldw     $9,$8,8         ; load transmitter status into $9
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        and     $9,$9,1         ; check transmitter ready
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        beq     $9,$0,L2 ; loop while not ready
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        stw     $10,$8,12       ; load char into transmitter data
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        j       L1              ; all over again

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