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This program allows you to browse a selection of the contents of your computer's hard drive with your TI-89. You can also rename, copy, move, and delete the files on your calculator and have the same changes made to the actual files on your computer.

There was both a program written for the calc in TI-BASIC and a program for the computer written in VB6. The calculator portion of it was written instead of paying attention in a history class that I took summer of 2001. I released it to ticalc.org when it was done. Because it was written in BASIC and running on a 12Mhz calculator it was too slow to be very practical, so it was more of an amusing proof of concept.

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This is the program on the Windows side which created file lists for the calc app and then enacted changes made on from the calc.
  BENCHMARKS  
Loading Time: Base Classes  0.0017
Controller Execution Time ( Project / Id )  0.5393
Total Execution Time  0.5411
  GET DATA  
No GET data exists
  MEMORY USAGE  
924,776 bytes
  POST DATA  
No POST data exists
  URI STRING  
project/id/31/TI-89_Virtual_Harddrive
  CLASS/METHOD  
project/id
  DATABASE:  smkprojects (Project:$db)   QUERIES: 5 (0.0036 seconds)  (Hide)
0.0006   SELECT *
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0.0006   SELECT *
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`ProjectTags`
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HAVING COUNT(1) >
0.0010   SELECT TagCOUNT(1) AS cnt
FROM 
`ProjectTags`
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HAVING COUNT(1) > 
  HTTP HEADERS  (Show)
  CONFIG VARIABLES  (Show)