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V9990

273 bytes added, 14:55, 6 October 2018
* In the following "databus" means that the v9990 doesn't assert the bus, it doesn't provide data, so the value read is "floating-bus" or the value on the z80 databus at the time. More commonly on CPC it's &ff, but there are some configurations of CPC where this differs.
 
* Reading from the Kanji ROM ports without a Kanji ROM returns databus values
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