To use, add -exp hd20 to the commandline, which will also allow you to add -hard <filename>.
Code: [Select]
mame cpc6128 -exp hd20 -hard1 disk.chd
Only MAME CHDs are supported, you can create a blank hard disk image using chdman. Geometry is 615/4/17.
Code: [Select]
chdman createhd -o disk.chd -c none -chs 615,4,17