Online HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens
INT 13,1A - Format Unit (PS/2 model 50+)
AH = 1Ah
AL = defect table count
DL = drive number (0=A:, 1=2nd floppy, 80h=drive 0, 81h=drive 1)
ES:BX = far pointer to defect table
CL = modifier bits
│7│6│5│4│3│2│1│0│ Format Unit Modifier Bits
│ │ │ │ │ │ │ └──── 1=ignore primary defect map, 0=use map
│ │ │ │ │ │ └───── 1=ignore secondary defect map, 0=use map
│ │ │ │ │ └────── 1=update secondary defect map, 0=don't
│ │ │ │ └─────── 1=do extended surface analysis, 0=don't
│ │ │ └──────── 1=periodic interrupt status on, 0=off
└─┴─┴───────── reserved
returns nothing
- only the disk number is checked for validity
- see INT 13,STATUS
[helppc.bosbyte.nl] int 13,1a