Changes
/* The 15 FDC Commands */
Abbreviations used:
*N = 2^(n+7) bytes, with N between 0 and 87. For example, N=2 means 512 bytes. There is conflicting info about the meaning of N=8: CPC-Power thinks it means 32768 bytes [https://www.cpc-power.com/SectorView.php?fiche=4225&slot=10&rang=0 Source]. While CPCWiki thinks it means N=0 (128 bytes) [https://www.cpcwiki.eu/index.php/Format:DSK_disk_image_file_format Source].
*MT = Multi-track (continue multi-sector function on other head)
*MF = MFM mode (1 = Double Density)
