3. In the Amstrad community each 6845 implementation has been assigned a type number. This type identifies a group of implementations which operate in exactly the same way. The type number system was originally used by demo programmers.
It is possible to detect the 6845 present using software methods, and this is done to:
* warn that the software was not designed for the detected 6845 and may function incorrectly
* to adapt the software so that it will run with the detected 6845
* In most cases, the type of the detected 6845 is reported
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