TD0 and IMD images of DMF media are now loaded with the correct sector interleave;

Fixed several bugs in TD0 and IMD loading;
Added FDC READ DELETED DATA, WRITE DELETED DATA, and VERIFY commands;
Mismatching data address marks are now handled correctly.

src/fdc.h

@@ -31,6 +31,9 @@ void fdc_update_densel_force(int densel_force);
 void fdc_update_drvrate(int drive, int drvrate);
 void fdc_update_drv2en(int drv2en);
 
+int fdc_is_deleted();
+int fdc_is_sk();
+void fdc_set_wrong_am();
 int fdc_get_drive();
 int fdc_get_perp();
 int fdc_get_format_n();