Changes

The Amstrad CPC and Amstrad Plus do not have a DMA controller associated with the FDC. The INT pin of the FDC is not connected either. The clock runs at 4MHz instead of 8MHz. The DRQ (14), INT (18), VCO SYNC (24), MFM MODE (26), US1 (28) and HEAD LOAD (36) pins are not connected. TC (16) and RESET (1) pins are connected together. [https://www.cpcwiki.eu/imgs/4/45/CPC6128_Disk_Interface_Schematic.png Source]