Found format "ibm"
PLL Parameters: period_adj=5% phase_adj=60%
T0.0-69.0: IBM-MFM DD (16 256-byte sectors, 4096 bytes)
T69.1: IBM-MFM DD (15 256-byte sectors, 3840 bytes)
T70.0-78.0: IBM-MFM DD (16 256-byte sectors, 4096 bytes)
T78.1: IBM-MFM DD (14 256-byte sectors, 3584 bytes)
T79.0-79.1: IBM-MFM DD (16 256-byte sectors, 4096 bytes)
T80.0-83.1: Unformatted