Diskette-Driver-Parameters::= ─┬── /MCA ─────────────────────
                               │          
                               └──────────┘
Diskette-Adapter-Parameters::=
                   ─── /A:d ──┬────────────────┬──────┬─────
                              ├── /DMZ:d     ─│      │
                              │├── /IRQ:dd    ─│      │
                              │├── /PORT:hhhh ─│      │
                              │└────────────────┘      │
                              └────────────────────────┘

Diskette-Unit-Parameters::=
                   ─── /U:d ──┬─ /<!>AHS             ──┬┬┬─
                             ├── /F:Drive Capacity   ─│││
                    │         │├── /SPEC:Specify-Bytes ─│││
                    │         │├── /CL:Changeline-Type ─│││
                    │         │└─────────────────────────┘││
                    │         └───────────────────────────┘│
                    └──────────────────────────────────────┘

Drive Capacity  =  ────────────┬── 360KB  ───────────────────
                               ├── 1.2MB  ─
                               ├── 720KB  ──│
                               ├── 1.44MB ─│
                               ├── 2.88MB ─│
                               └────────────┘

Specify-Bytes   =  ────────────── hh,hh  ───────────────────


Changeline-Type =  ───────────┬┬─ /AT  ──┬┬─────────────────
                              │└── /PS2 ──┘│
                              └─── None ───┘

Diskette Adapter Device Driver Parameters

• MCA
  Install Adapter Device Driver on uChannel machines

  This parameter informs the IBM1FLPY adapter device driver to install on uChannel machines. The default is not to install on uChannel machines.

• DMA:d
  DMA Channel Number

  This parameter specifies the DMA channel number that must be used for the diskette adapter. DMA Channel 2 is used if this parameter is not specified.

• IRQ:dd
  Interrupt Level

  This parameter specifies the interrupt level that must be used for the diskette adapter. IRQ 6 is used if this parameter is not specified.

• U:d
  Unit Number

  This parameter specifies the diskette drive number to which options following this parameter apply. Diskette drive numbers start at 0.

  Note: To define a third diskette drive on a controller, the /U and /F parameters must be specified.

• AHS
  Automatic Head Switch

  This parameter informs the driver to use a diskette controller feature that automatically switches from Head 0 -> 1. This improves performance by reading both sides of the diskette in a single operation. The default is to enable this option. It may be disabled by negating this parameter.

• F:cccc
  Drive Capacity

  This parameter overrides the BIOS-supplied drive capacity information, enabling the use of drives that the host system's BIOS does not properly recognize. The drive capacity must be suffixed by a (KB) or an (MB).

• SPEC:hh,hh
  Drive Specify Bytes

  This parameter permits the setting of diskette controller specify bytes. This is used for drives with unusual or non-standard timing requirements. The correct setting of this parameter varies with drive manufacturers and must be obtained from the drive vendor.

• CL:clt
  Changeline Type

  This parameter permits changing the interpretation of the media change detection signals. The changeline signal can be interpreted according to PC-AT* or PS/2* standards; or checking of the changeline signal can be disabled using this parameter.

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