Model history
| 1998/05 | Release of MOS Model 9, level 903 |
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| 1992/01 | Release of MOS Model 9, level 902 |
| 1989/01 | MOS Model 9 released. |
| It is the predecessor of the recently introduced MOS Model 11. |
Code history
Known bugs
There are no known bugs in MOS Model 9.
