With the 4 way clockport expander (revision C) by Matthias Münch you can equip your Amiga 1200 with 3 additional clock ports.
Port 0 is compatible with the original clockport (address $ d80001), while the other ports cover the Zorro-IV board (address $ d84001, $ d88001 and $ d8c001). The design of the Clockport Expander was chosen so that on the one hand it would not collide with any other extension, and on the other hand, existing clock tower extensions could be reused even in the original housing under nearly optimal conditions.
Overview of the different clock sports equipment tested and their function at the individual ports:
|Device||Port 0||Port 1||Port 2||Port 3|
|Melody 1200||works||Not work||Not work||Not work|
|Prelude 1200||works||Not work||Not work||Not work|
|VS1011 Card||works||Not work||Not work||Not work|
Please note: It is important to ensure your Amiga 1200 has sufficient power, space and cooling to accommodate multiple clockport expansions. Your A1200 motherboard requires a 22-pin clockport header on the right hand side of the full clockport area. Most A1200s have this but some rare revisions have the header missing or installed on the left hand side.