== Schematics ==
=== AMSSIO ===
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'''PLEASE NOTE: The schematics and files has an error on pin 7 of the MC6850 (IRQ). It has been connected to Vcc, but should be left unconnected. '''
=== AMSSIO-II ===
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Image:Amssio-ii.jpg | AMSSIO-II (or AMSSIO version 4.0)
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== Other RS232 interfaces for the CPC ==