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- CDTA -- CD-ROM Timing Analyzer
-
- This CD-ROM timing analysis program measures the data throughput on
- your CD-ROM drive and controller and also guesstimates the amount of time
- required for the drive "head" to move from one place to another on the
- disc, i.e., the access time.
-
- The numbers computed by CDTA may not match manufacturers specs. For
- instance, CDTA assumes that you may not have more than 450 MB on the CD-ROM
- disc currently in the drive. So the access time test won't push the head
- out past where the data ends. When the manufacturers do their testing,
- however, they probably use a 660 MB disc and so their computation of access
- time will be higher than the one CDTA comes up with. So, as a final step,
- CDTA adds in a 50% fudge factor. In any case, the numbers CDTA
- produces should prove useful in comparing one drive to another.
-
- So far, I've gotten the following numbers:
- Read rate Access time
- Philips CM-100 15K bytes/sec 1036 ms
- Genstar 3000 30K bytes/sec 694 ms
-
- A second purpose of CDTA is to test out your drive/controller and disc.
- If your system fails the first test, the sequential read test that starts
- at sector 1000, then you have a hardware problem (or perhaps a dirty disc.)
- Ditto if it fails the second test, assuming that you are testing with a 450
- MB disc. (Two discs that will work with CDTA are the Software Toolworks
- Encyclopedia and the Ramsoft Pixure I GIF disc.)
-
- While I've copyrighted CDTA, it can be distributed freely as long as no
- modifications are made. (If you would like to see something modified,
- please drop me a line.) CDTA is freeware, not shareware, so no registration
- fee is required. However, if you would like to send me a few $$$ for my
- BBS, I won't mind. <g>
-
-
- Eric Balkan
- 14704 Seneca Castle Ct
- Gaithersburg MD 20878
- BBS: 301-294-0756
- Rime ID: ->PACKET