Topic       : Pure Assembler Documentation
Author      : John Kormylo
Version     : PASM.HYP 1.0
Subject     : Documentation/Pure Assembler
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HCP-Version : 3
Compiled on : Atari
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View Ref-File[ hdv_bpb ]

hdv_bpb      = $472  ;L   vector    BIOS    Getbpb.

... returns a pointer in D0 to the BIOS Parameter Block (BPB) for a
disk drive, or a BIOS/GEMDOS Error Code.

Stack contains:
   4(SP)  drive number (0=A, 1=B, ...).

Registers D3-D7/A3-A7 must be preserved.
Jump to old vector if wrong drive, otherwise RTS.

See also hdv_rw, hdv_boot and hdv_mediach.