* ROM is paged into the range &0000-&3fff when the red button is pressed and the NMI vector is executed.
* When the black button is pressed, the ROM is paged into the range &0000-&3fff and executes it at &0000.
* This checks the BASIC ROM version, and clears the extra ram if a BASIC ROM from a CPC6128 is found.
Code:
* The same plastic case is used by the Spectrum version of this interface.
* The spectrum has two switches on the top. One of which chooses load/save. * In the Amstrad these holes are filled with plastic caps.
== Pictures ==