Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
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@lang       : en
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View Ref-FileDsetdrv()
Drvmap()                                                               BIOS

Syntax

ULONG Drvmap( VOID )

Function      Drvmap() returns a list of mounted drives.

Opcode        10 (0x0A)

Availability  All TOS versions.

Parameters    None.

Binding       move.w   #$0A,-(sp)
              trap     #13
              addq.l   #2,sp

Return Value  Drvmap() returns a ULONG bitmap of mounted drives. For each
              drive present, its bit is enabled. Drive 'A:' is bit 0,
              drive 'B:' is bit 1, and so on.

Comments      Single floppy systems will indicate that two drives are
              available since both drives can actually be addressed.
              A request for drive 'B:' will simply cause TOS to ask the
              user to insert 'Disk B' and provide automatic handling
              routines for all disk swapping.

See Also      Dsetdrv()