Special memory zones

• F1C9h to F37Fh Disc Communication Area (Disk-ROM 1.xx)

• F380h to F85Eh System variables and work area

• F85Fh to F87Dh System variables for disks

• F87E0h to FB1Fh System variables and work area

• FB20h to FB34h System variables for disks

• FB35h to FCBDh System variables and work area

• FCBEh to FCBFh System variables for disks

• FCC0h to FD98h System variables and work area

• FD99h System variables for disks

• FD9Ah to FFD4h System hooks
  • FFCAh to FFD9h Extended Bios

• FFE7h to FFFFh System variables and work area