I was wrong about where the program seems to stop.
It is at the line  Print #hfile "S" .

http://www.nabble.com/file/p23375691/FMain.class FMain.class 


frenchpark43 wrote:
> 
> When I execute the code below , it works fine for the first "Single"
> button push. But on the second push
> I get an error message " System error. Illegal seek". Any ideas ?
> 
> PUBLIC SUB Single_Click()
>   DIM i AS Integer
>   DIM dump AS Byte
>  DIM data AS Byte
>  ' DIM data AS String
>  PRINT "Test"
>   PRINT #hfile "S"                ' Send S to start sweep
>      FOR i = 0 TO points - 1
>      READ #hfile, data, points
>      buffer[i] = data
>      NEXT    
>    draw_chart(buffer, points) 
> END
> 

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