Many aimed mostly at their home market, as their presence in Europe and overseas markets wasn't well established at the time, leading to different priorities:
As British Market was dominated by Speccy, the CPC had to deal with more Speccy ports than needed. But in a country such as France or Spain where the CPC was the dominant 8 -bit machine, developpers used different method.
Often an [[Atari|Atari ST]] was used for Cross Development in France.