Changes
== System Cartridge (BIOS of CPC+) ==
[[File:Inside GX4000 cart 1 unrotated.jpg|100px|left]]
* '''Board: PT-NO-Z90903-MC0121A'''
* With custom LKs, and double-sided soldering points.
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[[File:Cartridge-PT-NO-Z90903-MS0201A-Installed.jpg|100px|left]]
* '''Board: PT-NO-Z90903-MS0201A'''
* With custom LKs, and single-sided soldering points.
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[[File:Cartridge-2700-023P-1-Installed.jpg|100px|left]]
* '''Board: 2700-023P-1'''
* With hardwired LK1 and LK6, and single-sided soldering points.
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== DDI-1 ==
