This section is only of interest for people who use the MCDU to have
external access to PS1's CDU.|
The data path between PS1's CDU and the external MCDU is complex. Halfway in the path, an Optical Character Recognition step takes place, to convert the PS1 true bitmap CDU image to ASCII strings. It turns out to be non-trivial to do this OCR, as PS1 works with a relatively coarse display resolution. It depends on the exact display position of a character whether it is six or seven pixels wide. This means that, despite Ivan's efforts to code the OCR as robust as possible, once in a while the OCR module misses a character.
The MCDU code contains a few specific correction rules for these known anomalies. It may very well happen that you detect some more consistent inconsistencies between the PS1 display and the MCDU display. If you can reliably reproduce these, please mail them to me!
For a good MCDU anomaly report, please include:
|© 2019 Jeroen Hoppenbrouwers||For more information, mail to firstname.lastname@example.org|