18

Get current directory

• DL = drive number (00h = default, 01h = A:, etc)
• DS:SI → 64-byte buffer for ASCIZ pathname

• CF clear if successful
  • AX = 0100h (undocumented)
• CF set on error
  • AX = error code (0Fh) (invalid drive)

the returned path does not include a drive or the initial backslash

many Microsoft products for Windows rely on AX being 0100h on success