This function allocates a SCSI peripheral device and returns the device handle that will be used to access the device.

Input Parameter Structure

Field

Length
Device Peripheral Type
BYTE
Device Type Flags
BYTE
Nth Available
WORD

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FUNCTION CATEGORY : 80h
FUNCTION CODE     : 55h

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This function requires a device type, device type flags, and Nth available device to be passed in the request. The device type flags define the removable media indicator. The most significant bit of the device type flags set indicates that the media is removable. The Nth available is the Nth device in the device type group. If Nth available is 0, the next available device is returned.

• SCSI Device Types
  
  Direct Access
  0x00
  Sequential Access
  0x01
  Printer
  0x02
  Processor
  0x03
  Write Once/Read Many
  0x04
  CD-ROM
  0x05
  Scanner
  0x06
  Optical Memory
  0x07
  Medium Changer
  0x08
  Communications
  0x09

  Data Buffer

  ┌────────────────────┬────────────────────────────────────────┐│Field Name          │Length                                  │
  ├────────────────────┼────────────────────────────────────────┤
  │Device Handle       │WORD                                    │
  └────────────────────┴────────────────────────────────────────┘
  

  Device Handle
  Returned to the caller.

  ---

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